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Патент USA US2611625

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Sept- 23, 1952
'
_
A. G. STRAND
2,611,623
SKI AND METHOD OF MAKING THE SAME
'
Filed Feb. 24, 1947
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sept- 23, 1952
A. e. STRAND
2,611,623
SKI AND METHOD‘ OF MAKING THE SAME
Filed Feb. 24, 1947
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Sept. 23,‘ 1952 -
A. e. STRAND
2,611,623
SKI AND ‘METHOD OF MAKING THE SAME
Filed Feb. 24, 1947
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Patented Sept. 23, 1952
2,611,623
UNITED STATES PATENT caries
2,611,623
' SKI AND METHOD‘OF MAKING THE SAME
Andrew G. Strand, Philadelphia, Pa.; Elsie My
'
Strand,’ administratrix of said Andrew. G.
Strand, deceased, assignor, by mesne assign
ments, to Elsie M. Strand, Philadelphia, Pa.
Application February 24, 1947, Serial No. 730,266
. 1 Claim.
,
_
1
(01. 280-1113)
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2
_
Figure 13 is a sectional view similar to Figure
This invention relates to skis and methods 0
making the same. It has been proposed to utilize
for the construction of skis laminated wood and
10 of, a ski having one intermediate ‘ply.’
it has been proposed to cause the laminations to '
is the mode of formation of I an intermediate ply
extend on the bias with respect to the ski length
to afford additional strength. In accordance
with the present invention not only are the
wooden laminations so arranged as to stagger
or plies and accordingly there will ?rstbe de
scribed in detail how an intermediate ply ‘is pro
Of major signi?cance in the present invention‘
duced, particular reference being made to
Figures 1 to 4, inclusive. vThe starting point in -
joints but by proper chamfering the joints ‘are
the formation of an intermediate, ply is .the
made very strong while nevertheless the proper‘ 10 preparation of a block by the lamination surface
flexibility for a satisfactory skiis secured.
The invention also relates to the method of
manufacturing the improved ski involving the
particular formations of the ski plates or plies '
to secure highly satisfactory results and mini
mum wastage of material.
I
v.
v
to surface of thin boards or plies 2 of a suitable
wood such as hickory. These ‘plies. are glued
together as indicated in Figure 1. It will 'be
understood that, for simplicity of showing,
15 Figures 1 to 4, inclusive, are diagrammatic only
and are not dimensionally accurate since the
The foregoing broad objects of the invention
length of the block is of the order of the length
and other objects particularly relating to details
of the ?nished ski and the other dimensions are
such, as Will become apparent hereafter, as" will
of construction and manipulations will become
apparent from the following description read in 20 give intermediate plates or plies corresponding in
conjunction with the accompanying drawings in
which:
i
_
’
4. Figure 1 is a perspective diagram illustrating
the ?rst gluing and cutting operations in’ the
processor the formation of an intermediateply;
Figure 2 is a perspective diagram illustrating
the second gluing and cutting operations in the
width to the width of the ski to be formed. ‘The
length of a man’s ski may, for example be about
six feet while the width may range from about
3% inches to 3% inches. Figures 1 to 4, in
elusive,‘ are considerably 'foresho'rtene'd to make
it easier to follow the cuts and arrangements of
parts which are involved.
,
‘
'
process of the formation of an intermediate ply;
The rectangular block consisting of glued plies
Figure 3 is a. perspective diagram illustrating
the third gluing and cutting operations in the
process of the formation of ‘an intermediate ply;
Figure 4 is a perspective diagram illustrating
anfint'ermediate ply as is produced by the cutting
2 is sawed diagonally as indicated at 4’ along a
plane extending parallel to the "vertical edges in
that ?gureyand running from the vertical edge
at one side and end of a block to the vertical
edge at the other end and the other side thereof.
The result of this cut is to ‘produce two blocks A
operation shown in Figure 3;
.
Figure 5 is a side elevation of a ski formed in 35 and B of similar shape as indicated.
accordance with the invention and embodying
the novel construction;
'
The next step'consists of placingthe block B
to the right of ‘block A and securing by glue the
Figure 6 is a plan view of the same;
Figure 7 is a fragmentary sectional view par
face C to the face D.‘ The result is the produc
tially in sectionv illustrating the assembly of
intermediate plies or plates inthe formation of
surfaces of the blocks A and B being indicated by
a ski;
Figure 8 is a view similar to Figure 7 but show
ing the assembly of the intermediate plies with
top and bottom plies;
Figure 9 is-a transverse section of the improved
ski taken on the plane indicated at 9-9 in
Figure 6;
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'
Figure 10 isv a‘similar section ‘taken on the
tion of the block illustrated in FigureZ, the glued
thev heavy line C, D in that ?gure. As will be
evident, the resulting block is now trapezoidal
rather than rectangular and the longitudinal side
edges as shown extend diagonally across ‘ the
original plies 2. The angles involved arecon
siderably exaggerated and actually the'pdep-ar
tures of the'laminations from the side surfaces
of the new trapezoidal block are of the order of
1/2 inch per foot._
.
'
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_
,
50
The block illustrated in Figure 2 is now sawed
plane indicated at Ill-l0 in Figure 6;
through on a plane passing through thelongi
Figure 11 is a view ‘similar to Figure 8 but
tudinal edges E and F and intersecting the ends
illustrating an assembly of‘ plies including only
along the lines indicated at G. The last out
one intermediate ply;
results in the formation of a new pair of blocks
Figure 12 is a sectional view similar to Figure
9 of a ski having only one intermediate ply; and 55 each of triangular cross section, the lower right
2,611,623
3
4
hand block of Figure 2 being designated H and
the upper left hand block being designated I.
These blocks H and I are then rearranged with
the block I to the right of the block H, the blocks
being glued together as illustrated in Figure 3 so
that the vertical edge J is brought into coinci
dence with the vertical edge K. A new trape
zoidal block is thus produced which is sawed to
is indicated at S with the turned toe and heel
wedges at W and X shaped by the application
of pressure in conventional fashion.
The bottom ply and the intermediate plies are
of uniform thickness throughout the former, for
example being about 1/8 inch thick, and the latter
about It; inch thick. The variations of thickness
"through the length of the ski are obtained by the
shaping of the top plate or ply, which at the thin“
give intermediate plies. The sawing takes place
along planes indicated at L, M, N parallel to the .10.. nest portions thereof may be about 116 inch thick.
r The only exception to the uniform thickness of
upper left hand surface of the block as illustrated
the bottom'ply is the groove 2| of conventional
in Figure 3. The various edges of the out are"
shown in Figure 4 at L, M and N and the result ‘ type which may be 146 or 3% of an inch deep.
ing ply is designated at P.
As will now be clear, ' -
Conventional camber is imparted to the ski by
this ply comprises laminations 6, the meeting sur--' 15 the application of heat and pressure in usual
fashion. The various ?gures given above are, of
faces of which extend diagonally of the length of
the ply P so as to appear as indicated at 8 at the _.
course, subject to considerable variation as are
longitudinal edges of the ply and as indicated at
the dimensions of the various laminations, these
‘being dependent solely on the choice of the maker.
H! at the transverse edges. It will be noted that
Figures ll, 12 and 13 illustrate cross sections
the method of formation which has been de 20
of the assembly from which the ski is formed
scribed provides chamfering as indicated at It! so
and. of the resulting ski when only a single inter
that the glued surfaces between the laminations
mediate ply 22 is provided with bottom and top
do not extend perpendicularly with respect to the
plies 24 and ‘26, respectively. A ridge may be
top and bottom surfaces of the ply or plate P.
The result of this construction is an extremely 25 provided as indicated at 28 and one or more con
strong though ?exible plate or ply not liable to be
ventional bottom grooves as indicated at 30.
Whether two intermediate plies or only one are
broken by blows applied in a direction normal
to the ?at upper and lower ply surfaces.
used, nevertheless the construction is such that
the laminations of the adjacent plies run in inter
Assuming ?rst that a pair of intermediate plies
or plates are to be used in the ski a pair of plies 30 secting fashion and are additionally chamfered
in such a way that extreme resistance to breakage
P indicated at 12 and I 4 are secured surface to
along the lengthwise extending joints is oifered.
surface by glue but so arranged that as viewed
‘It will be evident that variations may be made
from the top the laminations run in opposite di
in details ofthe ski and the method without de
.agonal directions so that the joints intersect as
indicated in Figure 7. It will be noted that the 35 parting from the scope of the invention as de?ned
in the following.
7
I
i
chamfering in such case also occurs oppositely in
I claim:
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'
the two plies giving rise to a condition of maxi
A ski comprising a base plate comprising lami
mum strength.
nations of wood, the grain of the ‘wood of each of
Below the plates 12 and Hi there is located the
bottom plate of-the ski indicated at 16. vThis 40 said laminations extending parallel to the mating
edges of the laminations, the laminations extend
plate is also laminated with the laminations
ing parallel to the longitudinal axis of the ski and
chamfered as illustrated in Figure 8. The pro
oblique to the plane of the bottom of the base
duction of this plate is relatively simple, however,
plate, an intermediate ply comprising laminations
and is not illustrated diagrammatically since, as
will be obvious, it will result merely from proper 45 of wood,’ the grain of the wood of the laminations
of said intermediate ply extending parallel to the
diagonal cutting of a laminated block such as il
mating edges of vthe laminations of ‘said ply and
lustrated in Figure l for the formation of the
the mating'edgesof the laminations extending in
intermediate plies. The laminations of this bot
oblique relation with the plane of the top of the
tom plate I 5 run parallel to the edges of the plate
and accordingly vin crossing relationship with the
diagonal laminations of the intermediate ply I4
to which it is glued.
The top plate i8 is also of laminated structure
and, as indicated most clearly in Figure 8, con
sists of a number of strips of keystone cross sec
ply formed thereby'and extending diagonally of
the length of the ski, and a top plate comprising
laminations extending parallel to the longitudinal
axis of the ski and which are keystone-shaped in
cross-section and positioned alternately with the
wider faces at the top and bottom of the top
plate;
.
tion with their wider faces alternatively at top
ANDREW G. STRAND.
and bottom, these strips extending parallel to the
length of the assembled structure. It will be evi
. __
REFERENCES CITED
dent that here again the lines of separation of
the laminations at the glued surface between the 60 The following references are of record in the
?le of this patent:
plate 18 and the plate l2 run in intersecting di
rections so as also to contribute to the strength
UNITED STATES PATENTS
of the assembly.
Number
‘
Name
Date
The resulting glued assembly of Figure 8 is then
977,012
House ____ __‘-____p____ Nov. 29, 1910
65
shaped to form the ski. The external shape of the
1,444,611
Johansson __ ______ __ Feb‘. 6,-1923
ski is conventional and will be evident from Fig
2,301,339
Smith et a1 _______ __ Nov. 10, 1942
ures 5 and 6 and the sections illustrated in Fig
2,375,994
Johnson _________ __ May 15, 1945
ures 9 and 10. If a ridge top ski is desired proper
top surface shaping is provided as indicated at
FOREIGN PATENTS
20, the ridges U and V extending from the ?at 70 Number
’ Country
Date
top portion indicated at T.
The ski as a whole '
‘701,889
Germany _____ __p____ Jan. 25, 1941
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