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Патент USA US2411641

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' NOV. 26; 194-6.»
'
‘2,411,641
' |__ E’, SEALEY
WORK TABLE WITH SINE BAR ADJUSTMENT
Filed Feb; 4, 1944 '
5 Sheets-Sheet 1
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Nov. 26, 1946.
J
_|_. E. SEALEIY
‘2,411,641
WORK TABLE WITH .SINE BAR ADJUSTMENT
,
Filed Feb. 4, 1944
3 Sheets-Sheet 2
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L, E, SEALEY
'
‘ 2,411,641
WORK 'TABLE ‘WITH $11111 BAR. ADJUSTMENT '
Filed Feb. 4. 1944
, 3 Sheets-Sheet 3
INVENTQRU
LOuns E. DWIN 5EALEY.
2,411,641
Patented Nov. 26, v1946
- ~ "UNITEDTSTATE-s 1>A'1~1~':1~rrv OFFICE
WORK TABLE WITH ~SINE BAR
ADJUSTMENT
I
Louis Edwin Sealev, Carsham, England, assignor
to Papworth Limited, Bristol, England, a
British'_ company
'
v . Amine-seen February 4, 1944, Serial No. 521,157
' ;
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Y
7 In Great Britain November 10, 194.],
>
4 Claims.
1
The subject of this invention
a'work table
hinged by'
for precision work, which can be set ?rmly and
accurately to any simple or cQmpQund anglefits
chief‘ object being to ' prcvne "1a widerrrange of
operation and, a greater degree of accuracy than
5
.
pm 41-
'2
_
. a carrying the
A bearing
work table b and comprising hangers 52.33pm‘
bracing the shaft'is capable'of a movement‘oi
rotation about; the said ‘shaft 0. The end ofthe'
shaft remote from its pivot pin d is supported
by‘a bearing head 9, and the head 9 is intuirn
supportedby two pairs of links u and v, the‘links
_ can be obtained by other ‘devicesused for‘ sim
ilar purposes. ‘For these purposes'I utilize a
known arrangement,‘ of the kind ‘in which a'cir
u being pivotally connected at a: with the ba'seIe,
' cular work table rotatable about its own centre
is also mounted’ to swing in a vertical plane,‘that
is, its axis of rotation can be tilted ‘about a shaft
and the links 0 pivotally connected with the "head
g at‘w. Anlarm a1 pivoted at b1 to the base ,6:
Qr'bearing member in a ‘pillar on the ‘base of the
and 1) meet, and as the lower half of this block
is split, and a pin_ 2 ctjnnecting the two pairs of
device.
‘
passes through a block ‘J at which the links u
'
According to the present invention, the shaft
links passes through the said‘lo'wer half, when
itself is pivotally connected with the pillar, ven 15 the Pin '2 is. tightened thev block and. linksla're
abling a third adjustment to be eiiected to pro
therebysecured in adjusted position, I, as seen
duce .a compound. angle of ‘tilting of the table.
The extent of adjustment in any plane is reg
ulated by a {sine bar, and locking means are pro
clearly in Figure '2. f
same will now be described more ,fully with‘ ref-
erence to the drawings accompanying which'il
lustrate an exempli?cation of the invention.
Figure 1 representsthe apparatus in si'deele
vation, with the work table in zero or horizontal
position.
7
,
,
'
,
Figure 2 ‘is anview corresponding ‘with that in
Figure 1, but with the table swung through: an
angle of 90 degrees into a vertical position;
Figure '3 is a plan of the table, partly broken
away to enable the locking mechanism of the
table to be seen.
'
- j
20
at 9:1 or 1/1 (Figure 9) and at the end of the ex;
tension shaft c2 at 21 which shaft is concentric
,
with shaftlqjbut' is '?xedfto and moves with‘.
25 table support it. Asseen' in Figure 4, a slip ‘II;
can be inserted between the stops 2' and 1' to sup.
port the table in a position parallel with‘the'
base, although the Itable is free to swivel'about
the shaft 0. The periphery of the table I) is grad
30 uated as seen in Figure l, and in the table top
are'rfour T slots 54 ,(see Figure 3) in square ,for
mation,‘ for the attachment of the work-piece
to the table.v In the zero position; that is with
“0” on the table graduations' opposite “,0” on a
35 graduated plate 5 on the bearing a, two of these
s
Figure 4 is an elevation, viewedat right angles
to‘that in Figure 1.
p
'
H
>
I
I
slots are exactly parallel with the centre line of
the hinged shaft 0, and the .other two slots ex.
~
‘ Figure 5 ‘is an elevation corresponding with
actly at right'angles thereto. A tapered spigot
r ‘is permanently secured to the table 11, and
that in Figure 4, with the table swung to the left
90 degrees into a vertical position.
40 can be gripped'by ‘a, taper bored band (1 con,
Figure 6 ‘is a 'view similar to that in
5, 7
but with the table swung to the right‘through
45 degrees.
'
'_
bearing a. f_A sine bar I1 having at one end a
disc dhcan be attached at either side of pin 01,
‘ '
Inorder that the said‘ invention may'be‘clearly
understood and readily carried; into e?ect, the
"
and o-and‘stopsi’a', ‘1'1; 'and'k depend from the
vided to secure the'table .?rmly in the positions
to which'it has thus been‘ adjusted.
,
Onhthe base 6 are stops or abutments f,,z‘_, l, n,
I
~
I
trolled by a screw p. By turning the screw ‘1b in
an anti-clockwise direction the band q is allowed
to release its hold on the spigot T, when thetable
Figure '7 isa view- similar to Figure '1, ‘with
can be rotated about its centre until the angle
some parts omitted, toshow the sine bar in ‘one 515 required can be read from the graduations
of its zero positions.
"
-
Figure ‘8' is a View similar to Figure 2 showing
the sine bar with slip gauges between its disc d1
and the setting pad hl.
marked on the ‘periphery 10f the table and those
on the graduated plate 8. The screw is then
tightened to lock the table in the position re
quired.
Figure 9. is a plan; and Figures 10, 11, and 12,. 50 Invthe position shown in Figure 2, the table I)
elevations similar to Figures 4, 5, and 6 respec
and shaft 0 are swung about the hinge d of the
tively, showing the sine bar in position in each
latter until the stop 9'1 on thehinge pin meets the
case.
stop 0 on the base e.
In the drawings e indicates a bed or base plate,
To move the table into the position shown in
on which is a pillar 5| to which a shaft c is 65 Figure 5, the slip h is removed and the table on
‘2,411,641
3
its bearing a swung around the shaft 0 until the
stop It on the bearing rests on the stop I on the
base. When the table is swung over to the other
side through an angle of 45 degrees, as seen in
Figure 6, the stop 1 on the bearing a meets the
stop 12 on the base e.
r
'
In order that the table may be locked in any
position to which it has been swung around thev
shaft 0, the bearing support a is split, and two ‘
screws t passed through the bifurcated lower por
tion. thereof, each of the said screws having
square portions at each end, so that the screws
can be tightened or slackened from either side
which may be easily accessible when‘ the table
has been tilted about the shaft 0, for instance
as in Figure 5 or Figure 6.
Assuming for example that a tilting angle'of 10 '
of which are 10 degrees and 22 degrees respec=
tively.
What I claim as my invention and desire to se
cure by Letters Patent of the United States is:
1. In a work table, a base, a pillar rising from
said base, ashaft pivotally mounted on said pillar
to swing in a vertical plane, a bearing to carry
va work table, said bearing comprising dependent
members rockable on said shaft in a vertical plane
' at right angles with the aforesaid vertical plane,
said work table being rotatable on said bearing
to obtain a compound adjustment of said work
table, an arm pivoted on said base carrying a bi
furcated block, said block being movable longi
tudinally of said arm, links pivoted to said base
and to said bearing respectively and having their
joint meeting at said block, a pin connecting said
links and passing through the split part of said
degrees is required in the plane of swinging about
block to tighten the latter to maintain the said
the hinge pin d, and an angle of 212' degrees in the
plane of swinging about the-axis of the shaft 0, 20 links and bearing in the position to which they
it is necessary in the ?rst place to ascertain that
have been adjusted.
v
,
2. In a work table, a base, a pillar rising from
the stops g and 1‘ meet (see Figure 1) then a slip
said base, a shaft pivotally mounted on said pillar
h 2.25 inches long is inserted between the stops
to swing in a vertical plane, a bearing mounted
12 and ;i (Figure 4) thus bringing the table into
on said shaft to swing in a plane at right angles
a true horizontal plane with the base Yes; the table
with said vertical plane, a table carried on and
is pushed ?rmly toward the base and locked rela
tively to the shaft 0 by means of the two screws t
rockable integrally with said bearing in a ver
and the screw 2 passing through the clamping
tical plane and rotatable thereon to obtain a com
pound adjustment of said work table, locking
block y, the sine bar I1 ?xed on the end of the
means provided to maintain said adjustment, and
shaft c2 (Figure 9) and a 1 inch slip gl placed
stops arranged to permit location of the work
‘between the abutment c1 on the base and the
table positively in horizontal and vertical posi
disc 111 on the sine bar (Figure 10), the nut e1
tightened on the extension of shaft 02 concentric
tions.
'
3. In a work table, a base, a pillar rising from
with shaft 0 so as to clamp the sine bar I“, at
the same time applying a light pressure on the 35 said base, a shaft pivotally mounted on said
pillar to swing in a vertical plane, a bearing
disc 011 to make contact with the slip g1. The con
mounted on said shaft to swing in a plane at
stant for 22 degrees is then selected from the sine
right angles with said vertical plane, a table car
bar table (5") which is 1.873, and a combination
ried on and rockable integrally with said bear
of slips to make up this ?gure is then required.
ing in a vertical plane and rotatable thereon to
The two screws t (Figure 2) are then'slackened
obtain a compound adjustment of said work table, '
and the table tilted, bringing the sine bar f1 away
locking means provided to maintain said adjust
from ‘the l” slip gauge g1 until the stops it and I
ment, ‘stops arranged to permit location of the
meet. The slips making up the combination are
work table positively in horizontal and vertical
now placed on top of the 1 inch slip g1, or alter
natively the 1 inch slip can be removed and 1 - positions, and further stops permitting location
of the work table in a plane inclined at 45° to the
inch added to make the combination 2.873. The
horizontal in a'movement of adjustment about
table is then swung lightly back until the disc d1
of the sine bar makes contact with the top of the
said shaft.
4. In a work table, a base, a pillar rising from
slips, the two screws t locked, and the nut 61,
said base, a pivot pin carried in the pillar, a shaft
sine bar and slips removed. Next, to obtain the
upon the pivot pin and disposed perpendicularly
angle of 10 degrees in the plane swivelling about
thereto for swinging in alvertical plane, a bear
the pin 12, the sine bar is attached to the pin d in
ing to carry a Work table, said bearing
the position marked y1 in Figure 9, again placing
a 1 inch slip between the disc 011 of the sine bar , comprising dependent members rockable on said
and the abutment h1 on the base 2 and the lock
. shaft in a vertical plane at right angles with
the aforesaid vertical plane, said work table being
rotatable on said bearing to obtain a compound
adjustment of said work table, a sine bar, means
upon the pivot pin of said shaft and the shaft
back until the hinge pin projection 51'1 meets the 60 itself for removable attachment of said sine bar
to permit the latter to co-operate with inter
stop pin 0 (Figure 2) slips can be placed on top- of
changeable slip pieces and thus to regulate the
the 1 inch slip to give 1.8682, then the table
adjustment of the pivot pin and shaft relatively
brought down until the disc d1 touches the top of
to the base, and locking means to maintain the
the slips, the screw 2 is locked, and the sine bar,
‘
nut e1 and slips removed. The table is now ready 65 said adjustment.
LOUIS EDWIN SEALEY.
for use with a compound angle the components
ing operation is repeated. The sine, bar is then
in a true parallel plane with the base 6. The
constant for 10 degrees is given as .8682, so that
if the screw .2 is slackened and the table pushed
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