close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2110877

код для вставки
March 15, 193s.
2,110,817??Y
A. J. HOPE
STRAIGHTEDGE
Filed Feb.' 4, 1937 ~
1
l
Patented Mar. 15, 1938
2,110,877
UNETEDY STATES
2,110,877
STRAIGHTEDGE
Arnold J. Hope, Chicago, Ill.
Application February 4, 1937, Serial No. 124,078
1l Claims.
rI’his invention relates to straightedges, and
relates particularly to straightedges designed and
adapted for use in paper hanging, for trimming
the meeting edges of the paper so that they will
. be as nearly straight and true as practicable,
thus insuring that the edges of adjacent lengths
of paper can be brought into contact, and thus
completely cover the wall, without puckering or
leaving gaps through which the surface of the
wall will be» exposed.
To this end, objects of the invention are:
To provide a straightedge which is initially
straight and true;
To provide a straightedge having a body por
l5k tion on which the straightedge proper is opera
tively mounted, and which is of such strong and
rigid construction that it will eil’ectually resist
any tendency to warp or buckle under internal
stresses produced by variations in temperature or
20 other causes;
To provide means for operatively mounting
the straightedge proper on the body por
tion thereof, said mounting means being con
structed and arranged to exert force on said
“ straightedge proper to flex the same in opposite
directions, at spaced points lengthwise thereof,
to correct any misalignment of said straight
edge proper, which may develop therein from
any cause;
30
,
To provide a straightedge, the body portion of
which is constructed and arranged to provide
convenient access to the adjusting means for sub
jecting the straightedge proper to force tending
to flex the same; and
CG Cil
To provide an adjustable straightedge, all parts
of which, other than the adjusting means, are
made of sheet metal.
To attain the objects of the invention, my im
proved straightedge comprises the various fea
40 tures, combinations oi features and details of
construction hereinafter described and claimed.
In the accompanying drawing, in which a
straightedge embodying my invention and im
, movements are fully illustrated;
Figure l is a top plan view oi what I now con
sider a preferable form oi straightedge of my in
vention, parts thereof being broken away to dis
close underlying parts;
~0
Figure 2 is a sectional view on the line 2-2
oi Fig. l;
Figure 3 a top pian view, substantially simi
lar to Fig. l, illustrating a modified construction;
Figure 3’
iii
a sectional view on the linel 3’-3'
oi Fig. 3, showing a double straightedge;
(C1. 164-73)
Figure 4 is a fragmentary top plan view, illus
trating another modification;
` Figure 5 is a sectional View of the modiñcation
shown in -Tig. 4, on the line 5_5 of Fig. 4; and
Figures 6 and 7 are fragmentary, detail views 5
on the lines ß--S and "l-l of Fig. l, respectively.
Describing the invention with reference to the
drawing, and referring in the ñrst instance to
Figs. 1 and 2, my vimproved straightedge, desig
nated as a whole, A, comprises a body portion or l0
base, designated generally Bi, on which the
straightedge proper designated generally b, is op
eratively mounted.
As shown, the body portion or base on which
the straightedge proper b is mounted, consists oi 15
a base plate i and a channel member 2 the edges
of the open side of which are rigidly secured to
said base plate. As shown, the edges of said
channel member 2 are secured to said base plate
by means of ñanges 3 formed thereon, which are 20
rigidly secured to said base plate, as by spot weld
ing or other suitable means, as will readily be
understood.
In accordance with the invention, the straight
edge proper b- is operatively mounted on the body 25
portion or base B, in the following manner:
Formed in the parallel flanges of said channel
member 2 are holes 6i, iitted to which, so as to
be movable endwise therein, are screws 5,
threaded to which at opposite sides of said chan
nel member 2 are nuts 5, which are adapted to
be clamped to the sides of said channel member,
thus providing for securing said screws to said
channel member in fixed axial adjustment, as
35
will readily be understood.
Formed on one end of each of the screws 5 is
a head 'l riveted or otherwise rigidly secured to
which is a channel 8 and an angle 9, which, in
usual practice, are continuous from end to end of
said straightedge, said angle in the specific con 40
struction shown, forming the straightedge proper.
However, within the scope and contemplation of
the invention, the angle 9 may be omitted,
whereupon the channel 8 will become the
straightedge proper. Thus, either the angle 9, 45
the channel ii or the two together, when mounted
as shown in the different figures, may be con
sidered as the straightedge proper.
As shown, the space between the flanges of the 50
channel 3 is sufficiently wider than the corre
sponding dimension of the heads 'l to provide
spaces lil between the side flanges of said channel
and said heads, at both sides thereof, of Sulli
cient width to slidably receive the bottom plate 55
2,110,877
2
l and a top plate Il, the function of which will
presently be described.
As shown, also, the flanges of the angle b are
Ul
of substantially equal width and, as shown, are
also equal to the width of the flanges of the chan
nel 8, and, when present, said angle is secured to
the heads 'I in such relation that the lower edge
of its flange secured directly to the heads l, will
be substantially ñush with the lower side of the
bottom flange of the channel, and the other
flange of said angle being spaced a suñicient dis
tance from the adjacent íiange of said channel S
to form a space I2, to provide for engaging a
trimming wheel, not shown, with said straight
edge, as will readily be understood by persons
familiar with such devices.
'
As shown, and to provide convenient access to
the nuts 6 on the threaded Shanks
for turning
said nuts without interference by contact of the
corners of said nuts with parts of the body por
tion of the straightedge and without unduly in
creasing the thickness of the body portion there
of, the threaded shanks 5 are formed with their
axes out of line with and above, the axes of the
25 heads 'I supported thereby.
At the opposite side of the straightedge from
the straightedge proper b, the bottom plate there
of is struck down, as shown at I3, to bring its
under surface into substantially the same plane
30 with the bottom side of the lower iiange of the
channel 3, thus insuring a level and stable sup
port for the straightedge when resting on a flat
surface.
As shown, also, the side of the straightedge re
35 mote from the straightedge proper b, is closed
by bending an extension of the struck down por
tion I3 of the bottom plate I, upwardly, as shown
at I4 and then inwardly, as shown at I5, to form
a marginal ledge which extends the entire length
40 of said straightedge, under which the corre
sponding edge of the top plate Il is adapted to
be engaged, and to which said top plate is se
cured at its opposite ends, by screws I6, the op
posite edge of said top plate entering the space
I@ above the heads 'I, with its intermediate por
tion resting on the channel member 2, the rela
tion being such that when adjusted in position
to close the top side of the body portion or" the
straightedge, said top plate will be subjected to
50 ileXure.
With the construction shown, it is obvious that
the screw-threaded shanks 5 and the nuts 6 ad
justed thereto at opposite sides of the channel
member 2, provide means for applying force to
the straightedge b and to the channel 8-which
may be considered as a part of said straight
edge-at different points lengthwise thereof, and
in opposite directions, to correct misalignment of
said straightedge, if, from any cause, it becomes
60 warped or out of true.
As a modification of my improved straight
edge, I contemplate a construction in which
straightedges proper b are mounted at both lat
eral edges of the straightedge A, forming what
65 may be designated as a double straightedge.
This modiñcation, shown in Figs. 3, 3’ of the
drawing, merely involves making the straight
edges symmetrical at opposite sides of a plane
extending lengthwise of said straightedge A, at
the transverse center of the channel member 2
and at right angles to the bottom plate I, and
the provision oi" adjusting means for both of said
straightedges.
What I now consider preferable means for the
75 purpose, consists of the screws 5, mounted trans
versely on the channel member 2 and axially ad
justable thereon, the heads l integral with said
screws, and the channels 8, riveted or otherwise
rigidly secured to the outer ends of said heads,
all substantially as shown in Figs. 1 and 2 of the
drawing and heretofore described, the adjusting
devices applied to the straightedges proper b,
mounted at opposite edges of the straightedge A,
being arranged in alternate spaced relations, sub
stantially as shown in Figs. 3, 3' of the drawing, 10
the same and corresponding parts being desig
nated by the same reference characters as in Figs.
l and 2.
As a further modification of the invention, see
particularly Figs. ¿i and 5, I contemplate a con 15
struction in which, instead of heads '1, integral
with the adjusting screws and to which the chan
nels â are rigidly secured, the straightedge sup
porting and adjusting means comprises screws
il, mounted on the channel member 2, elongated 20
nut-members I8 rigidly secured to the web of the
channel or channels 3, said nut members being
provided with holes I9 with which the adjusting
screws Il’ have threaded engagement, said screws
having nat-sided heads 2li integral therewith,
which limit endwise movement of said screws in
one direction, and provide for conveniently turn
ing the same.
The screws I'I are movable endwise in holes
formed in the side flanges of the channel member 30
as in the forms of the straightedge shown in
Figs. l, 2 and 3, provision being made for secur
ing said screws, and thus. the nut members I8,
in adjusted positions-corresponding to desired
alignment of the straightedges-consisting, as
„_iown, ci nuts 2i threaded to the screws Il at the
opposite sides of the channel member 2 from the
Las
screw heads 2B.
With the construction last described, it is ob
vious that the channels 8 and the straightedges 40
proper secured to the outer ends of the nut
mernbers it, may be drawn inwardly by loosen
ing the nuts 2i, turning the said screws in one
direction or the other, as the case may be, and
again tightening the said nuts 2I-or said chan 45
nels 8 and the straightedges secured thereto may
be forced outwardly by loosening the nuts ZI,
turning the screws I'I to partially withdraw them
from the nut-members i8 and again tightening
said nuts ‘ZI to clamp the entire structure rigidly 50
to the sides of the channel member 2.
Also, as shown in Figs. 4 to 7 of the drawing,
the bottom of the body portion of the straight
edge is closed by the bottom plate I, to which
the flanges of the channel member 2 are secured, 55
and the lateral edges oi which overlap the bot
tom iianges of the channels B; and the top of
the body portion of the straightedge is closed by
the top plate I I, the longitudinal, central portion
of which rests on the top oi the channel member, 60
and the lateral edges of which extend beneath
and are coniìned by the top -Ranges of the chan
nels 8, being secured in position on the body por
tion of the straightedge by screws 22 which ex
tend through said top plate and have threaded 65
engagement with nuts 23 secured to the under
side thereof.
As shown, also, the ends ofthe straightedge are
closed
flanges 25'.- and 25 formed on the oppo
site ends of said bott-toni plate, by bending ex 70
tensions of said botttom plate upwards into sub
stantial contact with the ends of the top plate
i I. Gbviously, said ñanges Zil- and 25 will
strengthen the botttom plate I to resist trans
verse ?lexure.
75
3
2,110,877
Attention is called to the fact that, in all forms
of my improved straightedge, the heads ‘l (Figs.
l, 2, 3 and 3'), and i8 (Figs. 4 and 5), and to
which the channels 8 and straightedge proper b`
Ui
are secured, rest upon and are supported by the
botttom plate i and are also confined between
the top and botttom plates l and Il, thus provid
ing a very strong and rigid support for said chan
nels and straightedge proper in operation.
I claim:
1. In a straightedge, a body portion comprising
a base plate, a member secured to said base plate
and which extends lengthwise thereof, a straight
edge proper, means for mountingsaid straight
edge proper on the longitudinal body member
comprising screws which adjustably engage holes
in said longitudinal body member, heads secured
to said screws and which rest upon said base
plate, said base plate extending laterally beyond
the longitudinal body member a sufñcient distance
to support the heads of the adjusting screws, to
>the outer ends of which said straightedge proper
is secured, means for separately adjusting said
screws axially, to flex said straightedge proper, and
means for securing said screws to adjusted posi
tions on said longitudinal body member.
2. The straightedge specified in claim 1 the
body portion of which is made of sheet metal.
3. In a straightedge, a body portion comprising
30 a base plate, a member secured to said base plate
and which extends lengthwise thereof, a channel
which forms the straightedge proper, means for
mounting said channel on the body portion of
ie straightedge, comprising screws which ad
35 justably engage holes in said longitudinal body
member, heads secured to said screws and which
rest upon said base plate, said base plate extend
ing laterally a suiiicient distance beyond the body
member secured thereto, to support the heads of
40 said adjusting screws, to the outer ends of which
said channel is secured, and means for securing
said screws in adjusted positions on said base
member.
4. The straightedge specified in claim 1, which
also comprises a. top plate which extends over
and rests upon the top side of the longitudinal
body member forming part of the body portion
of the straightedge, and a channel, the web of
which is rigidly secured to the ends of the heads
oi the adjusting screws and the flanges of which
extend over said heads, the radial dimension of
said heads being less than the width of the
space betweeen the flanges of said channel and
providing spaces between said heads and iianges
which the lateral edges of the top and botttom
plates of the body portion of said straightedge
slidably engage, thereby coniining both said
heads and said top and bottom plates in opera
tive relation to each other, and means for secur
ing said top plate to a relatively ñxed part of the
straightedge.
5. The straightedge specified in claim 1, and a
straightedge proper' consisting of an angle se
cured to the heads of the adjusting screws, out
side of the channel secured to the heads of said
adjusting screws, a. iìange of which projects over
said channel in spaced relation thereto', providing
a space extending the length of the body portion
of the straightedge for engagement by a trim
70 ming wheel.
6. The straightedge specified in claim 1, in
which the member which engages the space de
iined by the top flange of the channel secured to
the heads cf the adjusting screws and said heads,
is the- top plate of the body portion of the
straightedge, said plate extending over and rest
ing upon the top oi the channel member, and
the edge thereof remote from. said heads being
rigidly secured to the body of said straightedge
at the opposite side of the channel member from 10
said heads.
7. The straightedge specified in claim 1, in
which the member which engages the space de
ñned by the topi flange of the channel secured to
the heads of the adjusting screws and said
heads, is the top plate of the body portion of the
straightedge, said plate extending over and rest
ing upon the top of the channel member, and
the edge thereof remote from said heads being
rigidly secured to the body of said straightedge 20
at the opposite side of the channel member from
said heads, the arrangement being such that said
top plate will be subjected to transverse iiexure.
8. In a straightedge, a body portion comprising
a base plate, a longitudinal body member rigidly 25
secured to said base plate, straightedges proper,
means for mounting a straightedge proper at each
edge of the body portion of said straightedge,
comprising a, plurality of headed screws movable
endwise in holes formed in the sides of said chan 30
nel member with their axes disposed transversely
thereof, and comprising headed screws the
threaded ends of which extend in opposite direc
tions, channels, nut-members rigidly secured to:
the webs of said channels, said nut-members being 35
provided with holes in their inner ends with
which the adjusting screws have threaded en
gagement, means for adjusting said heads axially
and for securing them in adjusted positions.
9. In a straightedge, a body portion comprising 40
a base plate, a longitudinal body member rigidly
secured to said botttom plate, straightedges
proper, means for mounting a straightedge proper
at each edge of the body portion of said straight
edge, comprising a plurality of headed screws 45
movable endwise in holes formed in the sides of
said channel member with their axes disposed
transversely thereof, and comprising headed
screws the threaded ends of' which extend in opf
posite directions, channels, nut-members rigidly 50
secured to the webs of said channels, said nut
member‘s being provided with holes` in their inner
ends with which the adjusting screws have
threaded engagement, means ior adjusting said
heads axially and for securing them in adjusted 55
positions, consisting of nuts threaded to said
screws at the opposite sides of the longitudinal
base member from the screw heads and arranged
to clamp said screws in fixed adjustment to said
longitudinal base member.
60
10. The straightedge speciñed in claim 1, in
which straightedges proper are mounted at both
lateral edges of the body portion thereof.
11. The straightedge specified in claim 1, in
which straightedges proper are mounted at both 65
lateral edges thereof and the supporting heads
therefor, respectively, at opposite sides thereof are
arranged in alternate: spaced relation.
ARNOLD J. HOPE.
70
Документ
Категория
Без категории
Просмотров
0
Размер файла
607 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа