US123222A - Geoege bekkhaedt - Google Patents

Description

2 Sheets-Sheet 2.

RQTS A Frs s. Patentedjan. 30, 1872.

FG 2a w Y Y E GEORGE BERNHARDT, OF RADCLIFFE, GREAT BRITAIN.

IMPROVEMENT IN MECHANISMS FOR DOFFING AND APPLYING BOBBINS IN SPINNING-MACHINES.

Specification forming part of Letters Patent No. 123,222, dated January 30, 1572.

SPECIFICATION.

I, GEORGE BERNHARD'I, of Radcliffe, in the county of Lancaster, in the Kingdom of Great Britain and Ireland, have invented Improvements in Spinnin@-Machines, of which the following is a specilication:

llI y invention relates to mechanism for simultaneouslyremoving full bobbins from spinningmachines and replacing' them with empty bobbins, and consists in improved moditications, arrangements, and devices hereinafter described.

In the accompanying two sheets of drawing, marked B, vFigure 1 is a cross-sectional elevation of so much of a spinning-machine as will be necessary for explaining my invention. Fig. 2 is a front view of the same, showing only one spindle. Fig. 3 is a detached plan of the empty bohbin-rail. Fig. 4 is a detached view in section, showing an lalternative arrangement ofthe empty bobbin-rails; and Fig. 5 is a fullsized detached section of a traveler-ring.

rJhe improvements are illustrated as applied to a ring and traveler spinning-frame. A, the two end frames 5 A1, spindle-foot step-rails; A2, upper spindle-bearing' rails 5 A3, roller-beams; a., draft or other rollers 5 b, tin drum or roller for driving the spindles C. The above-named are all ordinary parts of spinning-machines. e, shafts for actuating the copping or ring rails d. These shafts have wheels e3, clutches c4, clutch-forks e5, and a shaft, e6, to connect the two clutches, as a means of connecting anddisconnecting the two shafts e with any ordinary copping-motion. The wheels el, e8, and e9 (the pitch'lines of which are shown in Fig. 1) gear the two shafts e together, and also with the wheel f1 in the boss of the hand-wheelf, loose on the end of the tin-drum shaft. lThe mechanism is the same upon both sides of the frame, and I shall refer in my description, to make it more clear, to the parts only of one side of the frame. There are wheels e3 on the shaft e, a-nd each of these gears with a rackbar, e2, sliding vertically in bearings in the spindle-rails, the number of these rack-bars depending upon the length of the frame. To

the upper end of the rack-bars the. ring-rail d is jointed on centers d1, so that when spinning it may remain in a horizontal position, as-shown on the left side of Fig. 1, but may be lifted to the inclined position shown on the right side of Fig. 1. bent spring, d2, is secured, which carries a Wedge, d3, which the force of the spring presses y against the edge of the ring-rail when horizontal, and, the end of the wedge and the edge of the ring-rail being slightly beveled, the force of the spring tends to hold the ring-rail down in its horizontal position; but when the ringrail d is lifted the wedge passes between its under side and the top of the rack-bar e3 and holds it in the inclined position. This lifting ofthe ring- 1ail into the inclined position is accomplished by one or more pins, 1.4, in the ringrail, which pin comes against the top of the upper spindle-rail A2 when the rin g-rail is lowered suiiiciently. The wedged3 is withdrawn by causing the incline upon the end ofthe spring d2 to come against an incline-stop, d5, secured to the roller-beam A3, by raising the rin g-rail sufficiently high. Both these extreme movements of the ring-rail are beyond its ordinary reciprocations when spinning. r1he rail K for the empty bobbin extends from end to end of the frame, and has diagonal slots K1 in it, by which it can be secured by screws K2 to the framing so as to beA moved to and fro by the handle K3 diagonally. lhe rails on both sides of the frame may be connected by a cross shaft and two arms, the ends of which lit crossslots in the rails, so that both may be simultaneously acted upon by moving the cross-shaft if required. In each rail there are as many holes as there are spindles, and these holes, when the machine is spinning, (as shown on the left of Fig. 1,) are midway between the spindles, so that the empty bobbins come in the space between the threads; but when dofng, the rail is slid forward diagonally by pushing endwise at the handle K3 of the rail, and the A vupon which the bobbins rest, this hinged bottom being partly cut away where it will come opposite each spindle, as shown in Fig. 3. r1`he To one or more of the rack-bars a' spring', K6, secured to the roller-beam.

hinged bottom is held np, as shown on the left side of Fig. l, by a tail part, K5, from it, which comes under the end of a bent or beveled This spring gives way when the tail part descends, and then escapes past and comes above and holds down the tail part. lVhen the empty bobbiu-rail is slid endwise the tail part K5 is withdrawn from the spring K6, which allows the bottom K4 to fall just when the axes of the empty bobbins come over the spindles. The hinged bottom K4 is lifted when the empty bobbin-rail is moved back by one arm of a twoarmed part, K7, centered on a bracket, K8, secured to the roller-beam that comes aga-inst the under side of the hinged bottom, and the bottom is lifted quite close when the edge of the empty bobbiu-rail strikes the other arm of the part KT, (see left of Fig. 1,) by which time the spring K6 will have risen above the tail part. K is a pin in the bracket to keep the arms in the part KT from falling` too far when the bobbin-rail moves forward. In place of the hinged bottom amore simple arrangement may be used formed by a bottom, K9, extending from end to end of the frame and fixed to a vertical plate secured to the frame. (See Fig. et) This iixed bottom sustains the empty bobbins with sufficient accuracy, and their edges are only released from the edge of the fixed bottom a short space before the axes of the bobbins come over the spindles. The lower heads of the bobbins used are notched, and have a groove round them, as shown, and the collar of the brad G1 upon each spindle is roughly milled, so as to prevent the thread from uncoiling when the full bobbins are lifted from the spindles, and break the thread between the full bobbins and the brads with certainty. The rings upon which the traveler works are each made with an internal projection, n, as shown by the full-size detached View, Fig. 5. This is to prevent the threads from escaping from the traveler when dofling, as they are liable to do when the thread is slackened.

I will now describe the mode of dofng. Then the bobbins a-re full the clutches e4 are disconnected then lthe ring-rails are lowered by the hand-wheelf until they come against a stop, m, which is a sliding pin connected with a spring-handle, m1. At this stop a portion of thread is wound in spinning round the boss part of each brad G1, and then the machine is stopped. The stop m is then withdrawn and the ring-rails are lowered by the hand-wheel f until the stop or stops d4 come against the upper spindle-rail A2. This places the ringrails in the position shown on the right of Fig. l, so that as they ascend by turning back the hand-wheel f the edge of each ring will come under the end of the full bobbin, which is slid up the spindle, the wire curl Z1 lifting out ot' the way to allow it to pass and fall from the spindle into any suitable receptacle placed to receive it. The ring-rail d is made to ascend a little after the bobbins have fallen to bring the inclined end of the spring cl2 against the incline-stop d5, secured to the roller-beam, and this causes the wedge d3 to be withdrawn, leaving the ring-rail to fall by gravity and assume its horizontal position. The ring-rail is then lowered and the clutches e4 brought again into gear. The empty bobbin-rails Kare slid forward diagonally, and the empty bobbins X fall upon the spindles, and this completes the doffing opera-tion.

Slack thread is given before the ring-rail is moved upward in doffin g by turning forward the draft-rollers to the extent of about onethird of a revolution of the front rollers. The ri ng-rail may be made to slide forward instead of being hinged, as described 5 but I prefer to hinge the ring-rail, as shown in Figs. l and 2.

Claims.

l. The ring-rail, hinged to the sliding rail or frame, in combination with the devices described or their equivalents, whereby the rings are caused to strike and lift the bobbins, as set forth.

2. The combination of the hinged rail and the pins d4, arranged to strike the rail A2 and tilt the ring-rail, as and for the purpose specied.

3. The combination of the tilting ring-rail, the springs d2 and wedges d, and the inclined stop d5, for the purpose specified.

4. The combination of the sliding bobbinrail- K and the hinged plate K4, as and for the purpose described.

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

GEO. BERNHARDT.

Vitncsses:

PETER J. LIVsEY, J Aims Woons.

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