US268458A - bubdioi - Google Patents

Description

('No Model.) 4Shets-Sheet 1.

G'. BUB-DICK.

SEWING MACHINE.

No. 268,458. Panama Dec. 5.1882.

WITNESSES INVENTOR TMNE S N. PETERS Plwlu-Lilhcgnphnr, Washin ton, DC.

('No Model.) I 4 sheetq heet 2.

G. BURDIGK. sBwme MACHINE.

No. 268,458. Patented Dec. 5, 1882.

INVENTOR ATTORNEYS N. PETERs. Phammhcgn mr. washm mn. D. C.

4 Sheets-Sheet 3.

(No Model.)

G. BURDIGK. SEWING MACHINE.

Patented Dec. 5

INVEN'I'OR 1 41i ATTORNEYS iv, PETERS. Pbololilhugnphun wimin ion, n.0,

(-No Model.) 4 Sheets-Sheet 4.

G. BURDI'GK.

SEWING MACHINE. No. 268,458. Patented Dec. 5, 1882.

WITNESSES A ffvrneya N. m'ena Fholo-Lithagngher. w hinwn. n. c

tached to said shaft D.

UNITED STATES PATENT OEETG.

GEORGE BURDIOK, OF CLEVELAND, OHIO, ASSIGNOE OF ONE-HALF TO LOREN PRENTISS, CHARLES M. VORGE, AND SEYMOUR O. PRENTISS,

OF SAME PLACE.

SEWING-MACHINE.

' SPECIFICATION forming part of Letters Patent No. 268,458, dated December 5, 18 82.

. Application filed March 16, 1882. (No model.)

1" 0 all whom it may concern Be it known that I, GEORGE BURDIGK, of Cleveland, in the county of (Juyahoga and State of Ohio, have invented certain new and useful Improvem cuts in Sewing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to sewing-machines; anditconsistsin the peculiar construction of the same, as will be hereinafter fully set forth and claimed.

In the drawings, Figure 1 is a view in side elevation of a machine constructed according to my invention. Fig. 2 is aplan view of the under side ofthe bed-plate, showing the shuttledriving and feed-operating pitman and lever and the manner of operating the same. Figs. 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13 are detached views of some of the parts of my machine, showing their construction more clearly.

A is the bed-plate of my machine. B is the standard, andU is the horizontal arm, which extends from the upper end of the standard B, as is usual in sewing-machines.

My machine is driven by means of power applied to the wheel D, which is detachably secured to the horizontal driving-shaft D by the following devices A collar, D issecurely at is provided with a pin, a, which is looselyjournaled in the collar, one of its ends extending out and being provided with a head or knob, so as to be grasped by the. operator, and the other end engaging, when in operation,with a hole, I), in the wheel D, it being kept in place in said hole 11 by means of a spring, 0. NVhen it is desired to disengage the pin a. frointhe hole b the said pin is pulled outward.

To the collar D is attacheda stud, cl, which extends within the boreof the collarand enters the slot 0 to be moved backward and forward a limiteddistance. Aslot, 0, located at right angles to the slot 0, connects with the latter, and hence when the pin a is retracted and given a partial rotation the stud will engage the transverse slot 6 and retain the pin out of contact with the wheel D,t-hereby allowing the This collar D in turn means of the spring 0. 6o

The horizontal shaft D imparts motion to a vertical shaft, E, by means of miter-gears.

To the lower end of the shaft E is secured acam, E, which engages with and acts to operate the feed-lever E giving said lever a longitudinal reciprocating motion. The lever E is kept in contact with said cam E by means of a spring, E.

f is a pivoted bearing, through which the feed-lever E slides. 7

F is a bearing-shoulder, constituting an inclined plane formed on a plate or bar pivoted to the under side of the bed-plate A, and made adjustable by means of an arm, F, and thumbscrew g, extending up through a curved slot in the bed-plate A; The function of the inclined plane F is to cause the rounded end h of the lever E to engage with it (when said lever is being pushed outward by the cam E) and act in connection with the spring E to give to the feed-lever E a transverse reciprocating motion, which is communicated to the feed-bar F This motion may be lengthened or shortened by adjusting the inclined plane F, which will act to lengthen 0r shorten the feed and stitch. 8 5 The up-and-down motion of the feed-bar F is imparted to it by means of an adjustable in clined plane, j, attached to the shuttle-carrier H, (see Fig. 1], wherein it will be observed that a screw extends down from the inclined o plane through the plate H, and is provided with nuts for retaining the inclined plane in any desired adjustment.) One end of the inclined plane j is attached to the shuttle-carrier, and the arm V of the inclined plane constitutes a spring, the tendency of which is to keep the incline in its raised position. To the free end of the incline is secured a screw-threaded stud, V by means of a pin the end of the lever, and thus prevent any looseness or rattling in the parts.

G is a crank, which is also secured to the lower end of the shaft E, below the cam E. This crank G acts to operate the shuttle lever or pitman G, which in turn is secured to and operates the shuttle-carrier H, giving to the samealongitudinal reciprocating motion. The shuttle lever or pitman G is made adjustable, one means of adjusting it being shown in the drawings, Figs. 2 and 12, which consists of a hollowsplit screw or bolt, G the head of which is pivoted to the shuttle carrier H, and

a nut, i, having a tapering female screw-thread, which engages with the thread on the bolt G and, when the end of the pitman G is entered in the hollow part or socket of the bolt G acts to clasp said end tightly, and thus, by moving the said end of the pitman G back or forth in said socket, it may be adjusted, and

held in the desired position. Any wear occurring between the parts may be thus quickly and easily taken up and the shuttle-carrier timed to the movement of the needle.

I is a crank-wheel securely attached to the forward end of the horizontal shaft 1). k The wrist and roller 70 of this crank-wheel operate to drive the needle-bar by working in a heartcam, as is usual in machines employingacrankwheel to drive the needle-bar. This crankwheel is made cam-shaped, as shown in Fig. 5,

which allows it to impart to the bar J a vertical reciprocating motion, which motion is in turn communicated to the take-up K by means of the hook lon the lower end of the bar J. The take-up is kept in contact with said hook I by means of a spiral spring, at, one end of which engages with a small hole in said takeup, the other end being secured in a hole in the head of a pin, m, said pin m acting as a pivot or fulcrum for the take-up and as a means for securing it in place. The pin m is in turn held in place by means of a set-screw, n, and said pin may be turned in either direction to increase or decrease the tension of the spring m, andthen secured in the desired position by said set-screw n.

K is an arm extending out in the rear of the pin m, and formed in one piece with the take-up K. Said arm reciprocates vertically to s arm 0. The armK is provided with a hole,

0, which, when the arm is at its lowest point, is in a direct line with holes P in the stud L. This allows of the thread being easily passed through the said holes when in this position. The function of this arm K is to unwind the thread from the spool as fast as needed, thus taking the strain from the needle.

My tension device consists of a piece of metal, M, adj ustably secured to the side of the face-plate by means of a set or thumb screw, 1, which passes through a slot, 8, in the piece M. The upper end of the pieceM is made hollow or bored out to a considerable distance, as shown in Eig. 7, and is provided with two disks, tand t. The faces of these disks ,t and t, which are contiguous, are polished,the edges of the same being slightly chamfered at the point where thetwo disks meet. I provide a slot, to, cut at a right angle to the bore of the piece M. This allows of the thread being passed between the two disks t and it from the outside. The tension of the thread is governed by means of a thumb-screw, N, and spring '0, the said spring 1; resting on the upper disk, t, and the set-screw N pressing on the spring '0.

Myobject in making the piece M adjustable is to allow of the slot at and disks taud it being mover. nearer to or farther from the take-up K, and thus adapt it to different thicknesses of cloth or goods being sewed by the machine. The manner of threading my machine is as follows: The end of the thread is first passed through one of the holes Pin the slotted stud L and then through the hole 0 in the arm K, and then out through theother hole P, and from thence through the hook O in the side of the horizontal arm (J, then between the disks t and t and hook y through the hole in takenp K, after which it passes to the needle. When the take-up K is moving in a downward direction the arm K is moving upward and pullingthe thread from the spool, and when the take-up K is moving upward the arm K is moving down, and the thread is slacked or fed to the take-up K. This operation is repeated at every up and down stroke of .the

needle-bar and take-up. Thus the only strain on the take-up K is the force required to pull the thread through the tension-disks t and t and the 'necessary strain employed in tightening the stitches.

What I claim is-- 1, In a sewing-machine, the combination, with the driving-shaft and driving-wheel loosely journaled thereon, of a collar securely attached to the driving-shaft, a pin journaled in said collar and adapted to be reciprocated therein, said pin being provided with an L- shaped slot, a stud secured to the collar and arranged to extend into said slot, and a spring for forcing the pin in one direction, substantially as set forth. V

2. In a sewing-machine, the combination, with a cam secured to the lower end of a vertical shaft, of a feed operating lever and a spring for retainingitin contact with said cam,

and an adjustablearm provided with an inclined plane, against which. engages the rear end of the feed-operatin g lever, substantially as set forth.

3.In a sewingmachine, the combination, with a feed-operating lever constructed with a lateral extension at its rear end provided with rounded edges, of an adjustable arm provided with an inclined plane, against which engages the lateral extension of the feed-operating lever and imparts lateral movement thereto, substantially as set forth.

4. In a sewing-machine, the combination, with a feed-operating lever and a cam for reciprocating the same, of an arm formed with a shoulder constituting an inclined plane, against which engages the feed-operating lever, and means for adjusting said arm, substantially as set forth.

5. In a sewing-machine, the combination, with a shuttle-operating pitman or lever and ashuttle-carrier, of a split, hollow, and tapering bolt journaled at one end to theshuttlecarrier and receiving the pitma-n in its other end, and aunt forclamping the hollow bolt upon the end of the pitman, substantially as set forth. i r

6. In a sewing-machine, the combination, with a'take-up provided with a pull-off arm or extension, of stationary thread eyes or passages located on opposite sides of said pull-off, substantially as set forth.

7. In a sewing-machine, the combination, with an independent take-up provided with a pull-off arm or extension, of a tension-regulatin g device arranged to engage the thread between the pull-ofl' and the take-up, substantially as set forth.

8. In a sewing-machine, the combination, with the combined take-up and pull-off, of the needle-bar J, curved lifting-finger Z, and heartshaped cam I, substantially as set forth.

9. In a sewing-machine, the combination, with a take-up provided with a pull-off arm or extension, of a slotted stud provided with thread-passages, substantially as set forth.

10. In a sewingmachine, the combination, with a take-u p provided with a pull-off arm or extension, of a pivotal pin, m, provided with a slotted head, a set-screw, n, to retain the pivotal pin in any desired rotary adjustment, and a spring, m, one end of which is secured to the take-up and its opposite end to the head of the pin m, substantially as set forth.

11. In a sewingmachine, the combination, with the take-up provided with a pull-oft arm or extension,of a tension device adj ustably secured to the machine and adapted. to receive the thread from the pull-off and to be adjusted to regulate the length of thread between the tension device and take-up, substantially as set forth.

12. Ina sewing-machine, a tension device consisting in the combination,with the hollow piece M, having a screw-slot, s, and a thread slot, at, of the disks 2? t and suitable means for, increasing or diminishin gthe pressure between said disks, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of' two subscribing witnesses.

GEORGE BURDIGK.

Witnesses:

EMMA O. WRIGHT, r W. E. DONNELLY.

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