US1173320A - Take-up. - Google Patents

Description

W. H. STEDMAN.

'TAKE-UP.

APPLICATION FILED MAR. 12. 1914.

Patented Feb. 29, 1916.

\ HI I 11| CL S 8 M U W I and. more particularly 3: .agsiinple mechanism of'overseamingsewin mach of the class disclosed in United Urtrr WILLIAM. H. STEDIKAN,

.. s'r; ree PATENT orrio a or nae rronnconnncrrcor, assrenoe T0 was MERROW MACHINE COMPANY, BF HARTFORD, CONNECTICUT, A COBLPDRATION 0F CON NEGTICU'I'.

i asco.

thereon.

My invention relates tosewingmachines to devices that oper- Me to pull oil, control and take up the thread thereof. The objectof this invention is to provide and eiii'ctive take up, pull off and controller for the thread in sewing machines and more particularly in overseaming niachines. i

In the drawings: Figure 1 is an elevation of my invention incl overseaming machine towhich my invention is shown applied. Figs. 2,- 3, and 4 ate diagrams, in the same elevation as Fig. invention. Fig. 5 Fig. 6 is a section taken on the line 6-6 of Fig.2. H l Like characters .of reference throughout thev drawings indicate the same parts.

Th single embodiment of. my invention shown in the drawings is a form especially designed to be applied to the stitch forming ines tates Patcnts Nos. 732,457 and 785,187 granted to me and issued respectivelv June e0, 1903, and March 21, 1985,; and United States Patent to Joseph M. Merrow, No. 591,049 issued )ctober 5, 1897. r

Referring again to the drawings, thenumoral 1 denotes the needle, 2 the needle carrier pivoted or fulcrumed on the stud 3 and actuated by the crank 4 on the rotating shaft 5 through the agency of the pitman link 6 one end of which crank 4 and the. other end rbraces the, stud 2 on the needlecarrier 2. The numeral 7 denotes the needleplate. 8 the presser foot which is" indicated in the dot and dash the stitch forming mechanism.

9 indicates a feed dog, 10. the-machine Specification of Letters Patent.

Ag plication filed March 12,

udin'g a portion of; an

link embraces the oi? -Wl'l10l1 emlines to more clearly disclose TAKE-UP.

1914; Serial No. 824,213.

frame, 11 a bracket plate on and 12 the needle thread tension mounted on the said bracket plate.

The numeral 13. denotes a horizontally reciprocating looper' which operates to pass a loop of looper thread, (which thread is herein. indicated by the loop of needle thread (which thread is herein indicated by the letter N), that the needle passes through the needle plate. llhe loop carrier 1d operates with a vibratory reciprocating movement to grasp the loop of thread which the looper 13 has passed through the needle loop and to carry the said loop of thread int'ofthe path of the descending needle. .The; needle, the looper and the loop carrier thus coiiperatc in a well known manner to form a overseam stitch. 1

Referring moregpai'ticularly to m invention I will now proceed to describe in detail shown inthe draw 'ings. The, crank embracing end of the pitthe single embodiment man link 6 is provided with an. extension or lug 20 which is recessed, as-is well shown in showing the operation of the devices of my is a plan of the Fig. 2. 5

Figs. 5' and 6, fortherec'ep'tion of the end 21 of theiinplement 22. I The'free end of the implement 22, 6., the end tha t is opposite sage 2 k and the hook mouth 25. The end 21 ofthe implement is secured in the recessprovided in thelug 20 for the reception 'thei of preferably by a rivet 2611s is best showere- Fig'. 6, and the implement-22 is thus carried bodily by the link 6, the throat 24 of the" said implement describing an ovate path which path is disposed in a plane parallel to the plane of movement of the link 6 and also I parallel to the plane of movement of the A pair of thread supporting elements, which i-n the present case are a pair of shanked and eyed studs having the shanks 30 and 31, and the'eye portions 32 and 33 through which the thread N passes, are mounted on the bracket plate 11 as shown -in Fig. 1. These eye portions 32 and will hereinafter be referred to as eyes 32 and 33 for the sake of convenience and brevity.

The location of the eyes 32 and 33 is a matter of importance and in the preferred Patented Feb. 29, 1916.

the said frame.

two thread l the letter L),-through embodiment, the said eyes are located with relation to the path in which the throat 24 of the implement 22 travels, and the preferred relation of the said eyes and path may best be seen and understood by reference to the drawings wherein it will be noted that a straight line between. the eyes 32 and 33 will extend in the general direction of the plane in which the path of the throat 24: lies and that the entire operative portion of the path of the throat 2i preferably lies wholly at one side of the said straight line extending between the eyes 32 and 33.

In the operation of my device, which, although it embodies the functions of a pull off, a take up and a thread controller, I will hereinafter refer to for convenience and brevity as a take up assuming the same and the threading system of the machine to have been threaded up and applied as shown in Fig. 1, the shaft 5 rotating in the direction indicated by the arrow causes the needle to swing upward and backward from the position in which it is shown in Fig. 1 and causes the implement to travel to the position shown in the Fig. 2 from which position the implement has traveled to the position shown in Fig. 3 by which time the needle has completed its ascent and, during the latter part of its ascent, the needle has pulled the thread out of the straight line between the eye 33 and the point of penetration of the needle thereby supplementing the action of the implement 2:2. While the implement 22 is passing from the position in which it is shown in. the Fig. 3 to the position shown in Fig. 4., the needle, descending, permits the thread to again assume a straight line between the eye 33 and the point of penetration of the needle as shown in Fig. i, and, as the needle, completing its descent passes a loop of thread through the needle plate as shown in Fig. 1, the implement 22 travels from the position in which it is shown in Fig. 4: to the position. shown in Fig. 1 thus completing a cycle of operations.

r ilthough the implement and the eyes 32 and 33, in the embodiment used to illustrate the present invention, are shown and have been described as rigidly mounted on their respective supp rting or carrying members and thus no relative adjustment is shown provided, this condition usually being desirable, it is obvious that provision for adjusting any one, any combination or all three of the said thread engaging elements will suggest itself to any one skilled in this art and is well within the scope of the present invention.

Having thus described my invention what I claim is:

In combination in a. sewing machine mechanism including a curved eye pointed needle, an oscillating needle carrier and a rotating eccentric element: a pitman link connecting the said rotating element with the said needle carrier, a lug projecting from that end of the said link which embraces the said rotating eccentric element, a moving take up implement fixedly mounted on the said lug and projecting outwardly therefrom in the direction of length of the said lug, whereby the thread engaging portion of the said take up implement is carried and actuated in an ovate path; and stationarymeans for-holding and supporting the thread to be operated upon by the take up implement, on two sides of a point in the said ovate path and in a straight line substantially parallel to the plane in which the said path lies, whereby the thread engaging portion of the take up implement is adapted to move along the length of the thread engaged thereby, during the operative movements of the said implement.

HELEN M. SKAU, Gannon ALLEN PAGE.

Copies of this patent may be obtained for five cents each, by addressing" the Commissioner of Patents,

- Washington, 11. G.

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