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April 29, 1947.
E. KOPP
2,419,721
BOOK HOLDER
Filed Dec. 29, 1944
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INVEN TOR.
BY
ERNEST KéPP
April 29, 1947. v‘
E, KOPP
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2,419I721
BOOK HOLDER
Filed Dec. 29, 1944
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INVENTOR.
'BY - ERNEST 'KbPP -
1754/37.‘.
Patented Apr. 29. 1947
2,419,721
UNITED STATES PATENT OFFICE
2,419,721
BOOKHOLDER
Ernest Kopp, Brooklyn, N. Y.
Application December 29, 1944, Serial No. 570,275
11 Claims. (CI. 45—80)
2
This invention relates to new and useful im
provements in book holders.
More particularly, the invention proposes an
improved book holder which is ‘characterized by
a base and a book supporting member pivotally
member l2 extends upwards and rearwards. A
rack I4 is mounted upon the back or underside
of the book supporting member l2. At the bot
tom the book supporting member I2 is provided
with a ledge l5 against which a book may be
mounted on said base and extending upwards
and rearwards and intended to support a book.
rested.
-
'
A wedge I6 is adjustably mounted on the base
H and engages said rack M for holding said
Furthermore, it is proposed to adjustably
mount a wedge on said base to engage the back
of said book supporting member for holding the 10 book supporting member l2 in selected inclined
latter in selected inclined positions.
positions. The top end of the rack M has a large
downwardly projecting tooth l4’ engageable with
Still further it is proposed that said wedge en
additional rack teeth l6’ formed along the in
gage rack teeth on the back of said member for
securely holding it in inclined positions, as de
sired.
15
The invention also proposes using more than
More speci?cally, the wedge l6
one wedge for more securely holding the book
engages into a groove l1 formed in the top face
supporting member.
of the base II. The bottom wall of the groove
Another object of the invention is the con
I1 is formed with rack teeth l8 which are-en
struction of a device as mentioned which is 20 gaged by complementary rack teeth formed on
simple and durable and which may be manufac
the bottom of said wedge l6. Resilient means is
tured and sold at a reasonable cost.
connected with the bottom of said wedge‘ l6 and
For further comprehension of the invention,
is so arranged as to engage the rack teeth upon
and of the objects and advantages thereof, ref
the bottom of the wedge l6 with said rack
erence will be had to the following description 25
accompanying drawings, and to the append
teeth l8.
_
._
The resilient means referred to in the previous
paragraph is in thevnature of a leaf spring 20
ed claims in which the various novel features of
the invention are more particularly set forth.
which is disposed within the groove 2| formed
In the accompanying drawing forming a ma
in the bottom face of the base H. Several sup
terial part of this disclosure—
30 porting elements 22, such as headed nails, or
Fig. 1 is a perspective view of a book holder
screws are mounted upon the bottom of the wedge
constructed in accordance with this invention.
l6 and support the spring 29. These nails or
Fig. 2 is a side elevational View of Fig. 1.
screws 22 pass through a slot 23 formed in the
Fig. 3 is a back view of Fig. 1.
base H. The spring 20 has a low central portion
Fig. 4 is a fragmentary enlarged vertical sec
35 and has its ends engaging the top wall of said
tional view taken on the line 4-4 of Fig. 3.
groove 2|. The wedge l E has handles 25 by which
Fig. 5 is a fragmentary vertical sectional view
it may be moved.
taken on the line 5—5 of Fig. 4.
The operation of the book holder is as follows:
Fig. 6 is a back View similar to Fig. 3 but illus
A
book may be rested on the book supporting
trating a book holder constructed in accordance 40
member l2 so that it engages against the ledge
with a modi?ed form of this invention.
l5. When it is desired to change the angle of
Fig. 7 is a side elevational view of a book
holder constructed in accordance with another
modi?cation of this invention.
Fig. 8 is a back view of the book holder of
Fig. 7.
.
Fig. 9 is a back view similar to Fig. 8 but il
lustrating the parts in a different position.
Fig. 10 is a fragmentary enlarged sectional
view taken on the line l0—l ll of Fig. 9.
oted upwards. Then the wedge l6 may be ad
45 justed forwards or rearwards on the base H. To
do this the handles 25 are manually gripped and
moved upwards to slightly lift the wedge I6. This
disengages the teeth on the bottom of the wedge
16 from the teeth is. Now the wedge I6 may be
50 moved forwards or rearwards.
Then the book
supporting member I2 is rested on the wedge l6
in its newly adJusted position. The top apex of
said wedge l6 willengage di?’erent ones of the
The book supporting 55 teeth of the rack I4 and so hold the book sup-'
porting member l2 in a new inclined position or
The book holder illustrated in Figs. 1-5 in
clusive, includes a base H for resting on a table
or other ?at object. A book supporting member
I2 is pivotally mounted on the front edge of said
base H with hinges l3.
the book supporting member'lz ‘it is necessary
that the book supporting member l2 be ?rst piv
2,419,721
the tooth M’ will engage the rack teeth It’ for
this purpose.
her in a selected inclined position, said rack hav
ing a top projecting tooth larger than any of its
other teeth, engageable with rack teeth formed
,
. In Fig. 6 another form of the invention is
shown which is similar to the prior form, dis
tinguishing merely in the fact that the book sup
porting member I2 is provided with a pair or
racks I4 mounted along its edge portions. These
on the inclined side of said wedge.
2. A book holder, comprising a base, a book
supporting member pivotally mounted on said
base and extending rearwards and upwards, a
rack on the back of said member, a wedge ad
racks 14 are engaged by a pair of wedges l6
justably mounted on said base and engaging said
which are mounted along the edge portions of 10 rack for holding said book supporting member
the base ||'. Each wedge is is similarly adjust
in a selected inclined position, said wedge engag
ing in a groove in said base, said rack having a
ably mounted on the base | I. The wedges l5 are
connected by a rod 26. Handles 21 project from 3 top projecting tooth, larger than any of its other
the sides of the wedges |6 by which they may be
teeth, engageable with rack teeth formed on the
inclined side of said wedge.
1
In other respects this form of the invention is 15 v3. A book holder, comprising a base, a book
adjusted in uniso .
similar to that previously shown and like refer
supporting. member pivotally mounted on said
ence numerals identify like parts in each of the
base and extending rearwards and upwards, a
rack'o'n the back of said member, a wedge ad
several views.
In Figs. r(~10 still another form of the invention
justably mounted on said base and engaging said
20
has been shown which distinguishes from the
rack for holding said book supporting member
prior. forms in the fact that the book supporting
in a selected inclined position, said wedge engag
member I2 is provided witha central rack “land
ing in a groove in said base, and rack teeth formed
with side racks H’. In other words, there are
three racks on the back of said member I12. A
in' said groove and engaged by‘ rack teeth on the
bottom’ of said wedge, said member rack having
platform30 is adjustably mounted upon the base 25 a top projecting tooth, larger than any of its
II. This platform 30 has rack-like teeth 3| pro
other teeth, engageable with rack teeth formed
jecting from its bottom face and engaging in slots
on the inclined side of said wedge.
32 formed along said base ||. These slots 32. are
4. ‘A book holder, comprising a base, a book
formed with complementary rack teeth 33 nor
supporting member pivotally mounted on said
30
mally engaged'by the rack teeth 3|. Each‘ rack
base and extending rearwards and upwards, a
3| is urged downwards by‘ a leaf spring 34 sup
rack on the back of said member, a wedge ad
ported by several headed screws or nails 35. These
justably mounted on said base and engaging said
screws or nails 35 pass through slots 36 formed
rack for holding said book supporting member
in‘ the base ||. Each leaf spring 34 is disposed
in a selected inclined position, said wedge engag
in a slot 31‘ formed in the bottom face of the 35 ing in a groove in said base, rack teeth ‘formed
in said groove and engaged by rack teeth on the
base ll.
‘
'
Transverse yoke-like guide rods 3-8 are mounted
bottom of said wedge, and resilient means urging
upon. the platform 33. A pair of wedges 40 with
said wedge downwards against said rack teeth,
rack- teeth H5.’- are transversely adjustablymounted
said member rack having atop projecting tooth,
40
on the yokes 38. In their spread. positions, these
larger than any of its other teeth, engageable
wedges 40 are engaged with the side. racks M, as
with rack teeth'iormed on the inclined side of
illustrated inFig. 8.- I-Iowever, the wedges to may
said wedge.
'
be moved together so as to be centrally located
5. A book holder, comprising a base, a book
as illustrated in Fig. 9, and now they are cooper 45 supporting _member pivotally mounted on said
ative with the central rack Id. The platform 35
has side projections 4|.
The operation of this form of the invention is
similar to the prior forms, except for the fact
that there is a choice of supporting the book sup
porting member l2 along its center, or along its
edges. However, it is necessary that the platform
base and extending rearwards and upwards, racks
on the back of said member, and wedges adjusta
bly mounted on said base and engaging said racks
for holding said book supporting member in se
50 lected inclined positions, said member racks each
having a top projecting tooth, larger than any of
its other teeth, engageable with rack teeth formed
3U be adjusted forwards and rearwards on the
on the inclined sides of said wedges.
'
base I] to adjust the longitudinal positions of the
6. A book holder, comprising a base, a book
wedges 40 and so control the tilt of the book sup 55
supporting member pivotally mounted on said
porting member i2. The platform 39 has said
base and extending rearwards and upwards, racks
side projecting portions 4| which may be used as
on the back of said member, and wedges adjusta
handles by which the platform 3!] may be initially
bly
mounted on said base and engaging said racks
raised to disengage the rack teeth 3| and 33 and
for holding’ said book supporting member in‘ se
then may be moved forwards and rearwards.
60 lected inclined positions, said wedges being trans
While I have illustrated and described the pre
versely adjustably mounted on a platform, racks
ferred embodiments of my invention, it is to be
upon the bottom of said platform engaging longi
understood that I do not limit myself to the pre
tudinally extending grooves in said base, comple
cise constructions herein disclosed and the right
mentary rack teeth in said grooves, and resilient
is reserved to all changes and modi?cations com
means for engaging the racks of said platform
ing within the scope of the invention as de?ned
with said last-mentioned racks.
in the appended claims.
7. A book holder, comprising a base, a book
Having thus described my invention, what I
supporting member pivotally mounted on. said
claim as new, and desire to secure by United
States Letters Patent is:
'
1. A book holder, comprising a base, a book
supporting member pivotally mounted on said
70
base and extending rearwards and upwards, a
rack on the back of said member, a wedge ad
justably mounted on said base and engaging said
base and extending rearwards and upwards, a
rack for holding said book supporting member
rack on the back of said member, and a wedge
in a selected inclined position, said wedges being
adjustably mounted on said base and engaging 75 transversely adjustably mounted on a platform,
said rack for holding said book supporting mem
2,419,721
6
racks upon the bottom of said platform engaging
said base and support and having a top face
inclined upwardly and rearwardly and provided
complementary rack teeth in said grooves, and
with rack teeth for coacting with said large teeth,
resilient means for engaging the racks of said
platform with said last-mentioned racks, and 5 and means for adjustabiy disposing said wedge
in different transverse and different longitudinal
yoke-like guide members mounted on said plat
longitudinally extending grooves in said base,
form and transversely adjustabiy supporting said
wedges.
positions on said base including rack teeth con
nected to said wedges for coaetion with said base
racks.
8. A book holder comprising a base, a book
11. A book holder comprising a base having two
support hinged at its bottom to the front of said 1 O
transversely extending racks in its upper face, a
base and extending upwardly and rearwardly
book support hinged at its bottom to the front
therefrom, said support having a rack extending
of said base and extending upwardly and rear
transversely along its under face, said rack having
wardly therefrom, said support having a middle
its top tooth formed larger than its other teeth,
rack and a rack on each side thereof extending
a wedge disposed between said base and support
transversely along its under
said support
and having a top face inclined upwardly and rear~
racks each having its top tooth formed larger
wardly and provided with rack teeth for coasting
than its other teeth, two wedges disposed between
with said large tooth, and means for adjustably
said base and support and having top face in
disposing said wedge in different transverse posi
clined upwardly and rearwardly and provided
tions on said base including rack teeth on said
20 with rack teeth for coacting with said large teeth,
base and cooperating rack teeth connected to said
wedge.
and means for adjustably disposing said wedge
in diiferent transverse and diiferent longitudinal
9. A book holder comprising a base, a book
positions on said base including rack teeth con
support hinged at its bottom to the front of said
base ‘and extending upwardly and rearwardly 25 nected to said wedges for coaction with said base
racks, and resilient means urging said last men
therefrom, said support having a rack extending
tioned rack teeth together.
transversely along its under face, said rack iav
ing its top tooth formed larger than its other
ERNEST KOPP.
teeth, a wedge disposed between said base and
REFERENCES CITED
support and having a top face inclined upwardly 30
and rearwardly and provided with rack teeth for
The following references are of record in the
file of this patent:
coacting with said large tooth, and means for
adjustably disposing said wedge in different trans
verse positions on said base including rack teeth
on said base and cooperating rack teeth connected 3
to said wedge and resilient means urging said last
mentioned rack teeth together.
10. A book holder comprising a base having
two transversely extending racks in its upper face,
a book support hinged at its bottom to the front
of said base and extending upwardly and rear
wardly therefrom, said support having a middle
rack and a rack on each side thereof extending
Number
UNITED STATES PATENTS
Name
Date
1,197,233
1,336,981
1,780,872
Flarnondon _______ __ Sept. 5, 1916
Schirnrnel ________ __ Apr. 13, 1920
Dumben __________ __ Nov. 4, 1930
180,052
Northrop _________ “July 18, 1876
456,089
655,284
1,560,131
1,767,889
Harrison _________ __ July 14, 1891
Thier _____________ __ Aug. 7, 1900
Achenbach ________ __ Nov. 3, 1925
Wiberg ___________ __ Mar. 24,‘ 1931
transversely along its under face, said support
racks each having its top tooth formed larger 45
Number
than its other teeth, two wedges disposed between
554,125
FOREIGN PATENTS
Country
Date
French ___________ -1 Feb. 23, 1923
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