Improvements in Attachment Holders for Sewing Machines.
Year: 1893

page_text: Date of Application, 15th Aug., 1893-Accepted, 16th Sept., 1893
COMPLETE SPECIFICATION.
Improvements in Attachment Holders for Sewing Machines.
We, GEORGE TUCKER, of Los Angeles in the County of Los Angeles and State
of California, United States of America, Agent, and ALMON SHOUP of the same
place, Restaurant Keeper, do hereby declare the nature of this invention and in what
manner it is to be performed, to be particularly described and ascertained in and
by the following statement :-
The object of our invention is to provide cheaper, more simple and convenient
means whereby sewing machine attachments may be more quickly attached to and
detached from the machine than is possible with the means now in use.
Our invention consists in a sewing machine shuttle-slide provided with an attach-
ment-receiving opening or socket, and with a suitable bolt or other catch or securing
device arranged on the under side of the slide and adapted to secure the attachment
when its fastening is inserted into the socket or opening combined with an attach-
ment carrying shank having a loop on its under side adapted to pass through a
slot in the slide and receive the bolt. It also consists in the special construction and
arrangement of parts whereby such bolt is applied to the slide. It also comprises
the attachment adapted for use with the shuttle-slide and the combination of the
attachment thus adapted and the shuttle-slide and its bolt.
The accompanying drawings illustrate our invention.
Fig. 1 is a fragmental perspective front view showing our invention applied to a
sewing machine and having a hemming attachment secured in place.
Fig. 2 is a perspective view of the attachment-holder-slide removed from the
machine and the attachment removed from the slide and turned to expose its
under side.
Fig. 3 is a perspective view showing the under side of the slide when removed
from the machine with the attachment in place.
Fig. 4 is an enlarged sectional view of the same on line x-x Fig. 1 looking
toward the right.
In the drawing A is a shuttle-slide adapted and arranged to take the place of
the ordinary front shuttle-slide of a sewing machine and provided with a transverse
attachment-receiving slot A' arranged and adapted to receive the securing device
or loop which is provided on the under face of a suitable attachment-plate C to
which is secured the attachment C₁ by solder or other suitable means.
This loop
is arranged to project through the slot A', as shown in Figs. 3 and 4 and to receive
the end of the securing bolt D which is arranged beneath the upper face of the
slide in suitable guides. In the drawings these guides a a' are shown secured to
and project below the slide A to allow the end of the bolt to reciprocate across the
slot A (and to be withdrawn therefrom) to engage and secure the attachment
fastening device or loop when it is set in the socket or inserted through the slot
(and to release the same).
The bolt D, as shown is flat and is formed of spring metal and is bent at one end
to form an inclined spring member d oblique to the main body of the spring and
arranged to reciprocate across the slot to enter the loop c of the attachment plate C
when such plate is placed in position with the loop in the slot A'; and by reason
of its inclined face to draw the plate C firmly down upon the slide A. The spring
action of the member d gives an elasticity to the connection which holds the parts
firmly in place and obviates all danger of the bolt accidentally working back out of
the loop and thus releasing the plate C from the slide, or allowing it to rattle or
become displaced.
In order to insure proper rigidity of the connection between the plate C and the
slide A. the plate Ċ is provided with downwardly proiecting Guide lues

page_text: arranged upon opposite sides of such plate, and the slide A is provided with
transversely arranged guide-slots e e¹ adapted to receive the guide lugs of the
attachment plate.
The attachment-receiving slot A' and the guide slots e e¹ are arranged in parallel
lines and are of sufficient length to allow the loop c and the lugs c¹ cl to slide back
and forth to adjust the attachment C¹ to the desired position in front of the presser
foot B'. Guage marks ff are provided upon the plate and the slide respectively
as a guide for the operator in adjusting the attachment to the proper position with
relation to the needle of the machine.
As shown in the drawings, the guides a a' are formed integral with the sheet
metal slide A, by stamping.
Now having particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. An attachment holder for sewing machines comprising a shuttle-race slide
having a transverse slot extending therethrough, a bolt arranged in guides upon
said slide and adapted to be reciprocated across the transverse slot, and a plate
having an attachment secured thereto and provided on its under side with a loop
which projects through the slot in the slide and is engaged by the bolt to secure
the plate to the slide.
2. An attachment holder for sewing machine comprising a shuttle slide provided
with bolt guides and with a transverse slot; an attachment plate provided with a
loop arranged to project through the slot; and a flat bolt arranged in the bolt
guides and formed of a spring metal strip having an inclined end and adapted to
reciprocate across the slot and to engage the loop.
3. The combination of the shuttle slide provided with the bolt guides, the lug
receiving slots and the transverse fastening slot adapted to receive a loop therein;
the attachment plate provided with a loop adapted to enter the slot in the slide,
and provided with the guide lugs arranged to enter the lug receiving slots and
a bolt arranged in the bolt guides and adapted to reciprocate across the slot
and to engage the loop.
Dated this 10th day of June 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicants.