Sewing-Machine Attatchment Page: 2 of 3
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UNITED STATES PATENT OFFICE.
PATRICK GRIFFIN, OF SARON, TEXAS.
SEWING-MACHINE ATTACHMENT.Specification of Letters Patent.
Patented June 7, 1.910.
Application filed September 15, 1909. Serial No. 517,870.
To all whom it may concern:
Be it known that I, PATRICK GRIFFIN, a
citizen of the United States, residing at
Saron, in the county of Trinity and State of
5 Texas, have invented new and useful Im-
provements in Sewing-Machine Attach-
ments, of which the following is a specifica-
tion.
This invention relates to an attachment
10 for sewing and other like machines employ-
ing driving belts, and has for its object to
provide a simple and effective tool driving
attachment for such machines, which at-
tachment may be readily applied and re-
15 moved and employed for running an abrad-
ing or buffing wheel or like rotary tool ele-
ment.
The invention consists of the features of
construction, combination and arrangement
20 of parts hereinafter fully described and
claimed, reference being had to the accom-
panying drawing, in which:-
Figure 1 is a front elevation of a portion
of a sewing machine showing the applica-
25 tion of the invention. Fig. 2 is a front to
rear section on an enlarged scale through
the worktable of the machine and parts of
the attachment, showing the remaining
parts of the attachment in side elevation.
30 Fig. 3 is a top plan of a portion of the work-
table and the attachment.
Referring to the drawing, the numeral 1
designates the worktable, 2 a portion of the
frame, and 3 the main shaft of a sewing
35 machine from which the sewing mechanism
is operated, which shaft carries a fly wheel
4 and a pulley 5, the latter being engaged
by the upper bight of the drive belt 6 which
is driven from a pulley on the drive shaft
40 below the worktable, the stretches 7 and 8
of which belt pass through openings 9 and
10 in the worktable.
My invention provides an attachment
which may be mounted upon the worktable
45 between the openings 9 and 10 and engaged
with the walls of said openings to hold it
in position, such attachment being provided
with a drive element operated by one of the
stretches of the belt 6.
50 The attachment comprises a base plate 11
which is adapted to rest upon the worktable,
as shown clearly in Figs. 2 and 3, alongside
and in parallel relation to the opening 10,
said plate being formed at one side with a
55 cut away portion 12 to expose said openingand having a downwardly projecting
clamping arm 13 to extend downward into
said opening and bear against one side of
the wall thereof. One end of said plate
11 is formed with an extension 14 over 60
which laps one end of a clamping member
15, which end of said clamping member is
formed with a longitudinal slot 1( for the
passage of a clamping screw 17 carried by
said extension 14. The opposite end of the 65
member 15 is provided with a downturned
spring clamping arm 18 designed to project
downward into the opening 9 and to engage
one side of the wall thereof. It will be n-
derstoocl by this construction that the base- 70
plate 11 and clamping member 15 may be ar-
ranged in position upon the worktable be-
tween the stretches 7 and S of the belt and
their respective arms passed downward into
the openings and the device then clamped 75
in position by relatively adjusting said mem-
bers 11 and 15 to cause said arms to bind
against the walls of the openings and then
tightening the clamping screw 17 to secure
the parts in adjusted position. Upon loosen- 80
ing the clamping screw, the parts 11 and 15
may be relatively moved outward and then
disconnected from the worktable by with-
drawing their clamping members from the
openings. 85
Secured to the upper face of the member
11 are two transverse strips 19 and 20 hav-
ing relatively inner beveled edges 21 form-
ing a dove-tailed guideway for a supporting
plate 22, the side edges of which are beveled 90
or dove - tailed to engage said dove - tailed
edges 21. This plate is also provided with
a cut-away portion 23 to aline with the edge
of the cut-away portion of the plate 11 and
carries a forked supporting standard 24 the 95
spaced arms of which carry at their upper
ends a bearing sleeve 25. The forked
bracket is arranged transversely of the sup-
porting plate so as to bring one of the ends
of the sleeve 25 in line with one of the edges 100
of the opening 10 when the device is applied
to the machine, and journaled in said sleeve
is a shaft 26 having ends projecting beyond
the sleeve. The end of said shaft which pro-
jects beyond the end of the sleeve adjacent 105
the opening 10 carries a pulley 27 grooved to
receive and engage the stretch 8 of the belt
6, while the opposite end of the shaft carries
a flange or collar 28 and a washer 29 be-
tween which is arranged the tool element 30, 110960,895.
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Griffin, Patrick. Sewing-Machine Attatchment, patent, June 7, 1910; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509883/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.