US937693A - Knotter. - Google Patents

Description

B. E. BYRD.

KNOTTER.

APPLIOATION FILED NOV. 18, 1908.

' 937,693; Patented 001;. 19,1909.

2 SHEETS-SHEET l.

B. E. BYRD.

KNOTTEB.

APPLIGATION FILED Nov. 1a. 190s.

937,693. y Patented Oct. 19, 1909.

2 SHEETS-SHEET 2.

'UNITED STATES Parana' orrion.

BRITTON E. BYBD, 0F DURHAM, NORTH CAROLINA, ASSIGrNOItV TO BYRD M FG. CO., `OIE DURHAM, NORTH CAROLINA..

KNOTTER.

To atwhom *it may concern:

. knotters 'and has for its principal object to improve, simplify and cheapen the construction of devices of this type.

A further object of the invention is to simplify and improve the means for operating the lrnot tying bill. y

A still further object of the invention is to simplify and improve the mechanism employ'ed for. gripping and holding the thread and removing the thread from. the tying bill after the completion of the tying operation.

Vith these and other objects in view, as will more fully hereinafter appear, the invention consists in certain novel features of construction and arrangement of parts, hereinafter fully described, illustrated in the` accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size and minor details of the structure may be made without departing from the spirit or sacrificingA any of the ad- .vantages of the invention.

In the accompanying drawingsz-Figure l is a perspective view of a knotter con-d structed Ain accordance with' the invention. Fig. 2 is a side elevation of themachine with the partsin position to receive the thread. Fig. 3 is a similar view showing the parts in the position assumed at the completion of a thread tying operation. Fig. t is a detail perspective view of the main carrying frame of the machine. Fig. 5 is. a similar view of the suporting frame of the tying'bill. Fig. v 6 is a detail; perspective view of the finger ated lever. Fig. T is a sectional lan viewthrough the frame in the planeo the tying bill.

Similar numerals of reference 'are' employed to indicate corresponding arts throughout the several Viigures of the avv-- ings..

Specification of Letters Patent.

1 Patented Oct. 19, i909.

Application uled November 18, 1908. ySerial No. 463,300.

In carrying out the present invention all, or practically all, ofthe parts are formed of stamped sheet metal so as to materially 'reduce the cost of construction and permitting all of the parts to be standardized.

The main carrying frame, as shown in Fig. 4,' Ais formed of a single sheet of metal that is bent to form a pair of side plates 10 and 11 and a handle 12, the latter being provided with attaching devices for a hand strap or loop 13 of any ordinary construction. The side plate il is of greater length than vthe side plate l'0being continued forward and turned'up to form. a bill 15 that acts as a thread guide during the tying operation.

The secondsection ofthe frame shown in Fig. 5 comprises a plate 17 having downturned, front and rear walls 18 and 19, and a pair of downwardly bent side lugs 20 and 21all of these parts-being formed of a single piece of metal.

The front and rear Walls 18 and 19 of the frame are provided with bearing openings for the passage of a shaft or spindle 23 which carries at one end a tying bill 24- of ordinary construction and the cutter blade of this bill is arranged to be actuated by an eccentric! `tying bill, to initial position immediately At the. rear endof the shaft is arranged a collar 32 after each knot tying operation.

which'is heldin place by a suitable set screw and serves# to prevent longitudinal displace? ment of the shaft.

' The thuinb or finger piece 35 lshown in Fig. 6, is made of a single piece of stamped sheet metal, so bent'as to-form a pair of approximately vertical parallel arms and 37, from which'extend arms 38' and 39, the latter arms being 'approximately horizontal. This linger piece is pivotallyconnected lto the main frame by a pair of screws 40 that pass .throughdiametrically' opposite opention shown in ings formed in the main frame, and one of the screws is continued through the downwardly extending lug 2l of the fraine nicniber li" for the purpose of foi'n'iing an additional frame securing means. it the rear end of the arni 35) is an inwardly bent lug l2, which, in connection with a small plate i3, forms a clamp for the reception of one end of a flexible actuating device l-l. This actuating device is preferably in the forni of a cord that is wound around the rear end of the shaft Q3, and-when the finger piece is actuated, and arm is moved upward froin-the position shown in Fig. 2 to that illustrated in Fig. 3, the cord will be unkwoiind from the shaft and 4the latter will be turned the proper distance to effect the tying of the knot and the cutting of the thread. This operation takes place against theresistaiice oil'ered by the torsion spring T50 and when pressure on the thumb piece is relieved, the spring will act to restore the tying shaft to its .initial position.

Extending through the rear portion of the side plate l() and the lug 20 is a screw Llbf on which is mounted a thread clamping lever l?, the forward edge of which terminates in a downwardly curved arni -l-S and to the extreme end of 1this arm is pivoted a thread clamping member lil having a hollow clamping jaw which embraces the clamping arm 4S in order to more securely holdtlie thread. The rear end of the lever 1li. is pro# vided with a rearwardly7 extended integral arm 52 on which bears a screw 53 car 1ied by an car 5ft that forms a part of a small lever 55, alsol pivotcd on the screw llo. The forward arm of the lever 55 rests on the arm 3S of the thumbor linger piece, and the rear end of the thread clam pin-g n'icinber 49 likewise rests on the arm' To assist in maintaining these parts in proper relative position and to actuate the thread clainpingmeniber 49, a* sniall'sprii'ig 5G is einployed. One' end of the `spring passes through a diametrical opening forinedin the screw el-G, and thence is wound several tiniesj around 'the screw, while the opposite or outer end of the spring is attached to the thread clainping member ett), attachment being .so located that the tend ency of the spring will be to move the clamp into operativo engagement with the thread but when the parts are in the normal posi- Fig. 2, the rear endof the thread clamping. member will rest on the tlifumb or finger of the clamp nieiiibei'-w'ill be held outward from the arm i8 in 4.order to permit' the read y insertion of the thread.

The oiieration of this device, so far as the tying of the knot is concerned, is well known to those skilled iii the art and does notrequire. any detailed description.

piece and the engaging fac-e' l i i t esmas .During the thread tying operation, the thumb piece is moved inward toward the inaiii rranie from/the position shown in Fig. 2 to that illustrated in Fig. 5, and the arni so vof the thumb piece will operate on the inner end of the lever o raising the saine and causing 'the rear end of the iever to be depressed. 'llie screw carried by the lever will thereupon actnpon the arm o2 and the inaii-i thread clamping lever will be carried up toward the' position shown in Fig. 3, while the butt of the clamping member 4:9 will ride on the arm 38 so as to prevent abrupt movement to thread clamping posi* tion. The thread clamping operation Will therefore be more or less gradual and the time of operation may be adjusted by turning the screw issoon as pressure on the thumb or finger I piece is relieved, the tying bill shaft will the point of" inain fi'anieplate bent be restored to its initial position as before stated, while the spring 5G will perform a like function for the thread clamping devices.

What is claimed is 2- l. ln a hand operated knotter, a two part sheet metal frame comprising a handle member having itsside flanges extended to forni the side plates of the main frame, and a to form Adownwardly extending front and rear walls, and side at taching ings, a thuinb lever pivoted t0 the frame and having apair of spaced rearwardly extending arins arranged on opposito sides respectively of the main frame, a

Vtying-bill, a tying-bill shaft, an operating means connectingone of the thumb lever arnis to the shaft, a thread clamping device, and means operable from the other arm, and a lever for actuating' said thread clamping device.

2. In a hand operated knetter, a frame, a tying-bill, a tying-bill shaft journaled in the fra'nie, a thumb lever, a flexible member wound around the shaft, and a clamping plate carried by the thumb lever and -arranged to receive and hold one end of said flexible member.

In a hand operated 'tying-machine, a traine, a tying bill, a tyingbill' shaft, a thumb lever arranged to operate'said shaft, a main thread clamping lever, a secondary lever pivoted on the saine pivot as the main lever, an adjustable lconnection between the two levers, and an arm extending from the thumb lever and engaging said secondary lever.

4. In a hand operated knot tier, aframe,`

a tying-bill, a tying-bill Ishaft journaled in the frame, a thread clamping lever pivoted to. the frame, a secondary lever p'ivoted on the pivot as the threadfclampinglever, the

two levershaving su perposed lugs near their rearA ends, a screw Apassing through one of' the lugs :ind-engaging the other lug, anarm my own, have hereto azied my sgnture carried by the thumb lever and engaging the in they presence of two Witnesses; secondary lever and` a secondary clamping n member Carredby the main clamping lever BRITTON E' BYRD 5 and held from excessive movement by the y' Ttnesses:

fum of the thumb lever.y J. S. PERRY,

' 'In testimony that I' claim the foregoing as R. C. MULLICAR.

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