US1821973A - Automatic stop mechanism for braiding machines - Google Patents

Description

Sept. 8, 1931. M. KRlsslEP 1,821,973

-UTOMATIC STOP MECHANISM FOR BRAIDING MACHINES.

Filed sept. 2e, 1930 sheets-sheet 1 "ifm-imm A TTURNEYS.

Sept. 8, 1931. M. KRlsslEP 1,821,973

AUTOMATIC STOP MECHANISM FOR BRAIDING MACHINES Filed sept. 2e, 1930 2 sheets-sheet 2 ,FI :1s- 3- IN V EN TOR:

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Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE MAX KRISSIEP, OF WYOMISSING, PENNSYLVANIA, ASSIGNOR TO TEXTILE MACHINE WORKS, OF WYOMISSING, PENN SYLVANIA, A CORPORATION OF PENNSYLVANIA AUTOMATIC STOP MECHANISM FOR BRAIDING MACHINES Application led September l26, 1930. Serial No. 484,687.

My invention consists in impr'oved automatic stop mechanism adapted particularly for braiding machines; and it provides in its full embodiment for effecting automatic stopping either in case of the breaking of a thread as is ordinarily required, or in case of undue strains upon the mechanism occurring, as from too sudden starting or other cause; with specially novel provision for making 1o such undue strains operative to stop and save the machine; as is fully set forth in connection with the accompanying' drawings and clearly defined in the subjoined claims.

Fig. 1 is a. plan view indicating only such portions of a known type of braiding machine as are involved in application of my invention thereto.

Fig. 2 is mainly an elevation looking in the direction of the arrows in Fig. 1.

Figs. 3 and 4 are similar views indicating a modified construction.

The base plate A, drive shaft 8, and drive Wheel 5 for operating the carrier mechanism, with its controlling brake drum 6 and band 7 are parts of known braiding machine construction, and are indicated in connection with the particular carrier-operated stop mechanism for effecting automatic stoppage in case of thread breakage; the present invention relating specifically to the added mechanism hereinafter set forth for effecting automatic stopping of the machine in case of undue strains, and to the cooperative arrangement thereof with such known automatic stop mechanism. The clutch device indicated at 11, with stop member 12, its actuating lever 25, and carrier-operated stop mechanism for actuating said lever to automatically release the clutch in case of thread breakage, sufficiently indicate such known mechanism.

As shown in Figs. 1 and 2, a suitable motor indicated at 30, with connected switch 31, are mounted under the base plate A. with the motor shaft 32 arranged to'drive the vertical carrier-drive shaft 8a, under control of the clutch device 11 on horizontal shaft 8, by the broken-thread stop mechanism above referred to. The motor shaft 32 is arranged to drive the horizontally mounted clutchequipped shaft 8 by means of a sprocketwheel drive chain 35 as shown. Under this chainis an idler wheelv 86, carried by a lever 37 fiXedly pivoted at 38, and pressed against the chain by a lever-connected spring 39 so as ta take up slack under normal driving strains, but permit of swinging movement of said lever when the drive chain is tautened by undue strain. Such swinging movement of the lever- S-is suitably arranged to operate the switch 3l so as to stop the motor; this being effectedby providing the swinging lever 37 with a switch operating extension 40 (Fig. 2) which engages a rollered-switch lever 41 as indicated.

rlhe modified construction shown in Figs. 3 and 4 illustrates a similar arrangement to Figs. 1 and 2 but having a substitute operating connection of the motor to the carrierdrive and switch mechanisms; a countershaft 50 being employed, which is mounted in carrying arms 51, 51a swingable on the motor shaft aXis with gear connections 52, 53 and 54, 55 provided respectively between the two shafts and between said counter-shaft and the carrier drive shaft 8. 1n this modified construction the lever 41a of switch 31L is operated by an arm 56 on the swingable mounting of said countershaft 50; the latter being normally retained in operating position relative to the motor shaft aXis by means of a fiXedly pivoted latch 61 which is yieldingly held in engagement with a locking arm 60 on said countershaft mounting, by a spring 62. vWhen undue driving strain is exerted the yielding of the spring 62 permits tilting of the latch 61, and swinging movement of the countershaft around the motor shaft aXis, whereby the switch lever is operated so as to cut ofi' the motor current as in the Figs. 1, 2 construction previously described.

It will be readily understood that the automatic control of the machine-drive mechanism for preventing the transmission of undue driving strains to the machine, is effected by means of a yielding driving connection substantially as has been fully set forth, in connection with provision for simultaneously freeing the motor by cutting off the-motor current, thereby satisfactorily avoiding the usual dangers of breakage incident to jarring strains. The construction specifically described may obviously be modified Within the scope of the invention as defined in the claims. 5 Whatlclaim is:

l. In combination With 'a braiding machine comprising carrier-drive mechanism; a switch-controlled motor operatively connected to said drive mechanism and to said m switch and comprising a transmission unit radially sWingable by undue driving strains, and a switch lever operated by said swinging unit to automatically stop the motor.

2. In combination With a braiding machine l5 comprising carrier-drive mechanism; a

switch-controlled motor operatively connected to said drive mechanism and to said switch and comprising a drive chain, a s )ringpressed idler-Wheel lever arranged to reguo late the slack of said drive chain7 and a switch lever operated by said idler-Wheel lever in case of excessive tautening of said drive chain.V

3. In combination with a braiding machine comprising carrier-drive mechanism; a switch-controlled motor operatively connected to said drive mechanism and to said switch and comprising a countersh aft swingable about the. motor shaft and provided with 30 switch-operating and latch-operating arms,

and a spring-pressed latch adapted to normally retain said swingable countershat in operative relation to said carrier-drive mechanism.

n testimony whereof I aix my signature.

MAX KRISSIEP.

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