US1591906A - Electrically-controlled cloth guider and the like - Google Patents

Description

July 6,1926. 1,591,906

A; WOOD ET AL ELECTRICALLY CONTROLLED CLOTH GUIDER AND THE LIKE F l August 12, 1924 3 sheets-sheet 1 July 6 1926.

A. woos ET 3 Sheets-Sheet 2 Filed August 12, 1924 July 6 1926; I 1,591,906

A. WOOD ET AL.

ELECTRICALLY CONTROLLED CLOTH GUIDER AND'THE LIKE File August 12, 1924 3 Sheets-Sheet 5 Patented July 6, 1926.

units MAncHEsTEn,

ENGLAND.

nLno TRIoALL Y-con'rnomnn CLOTH enrnnn AND THE LIKE.

Application filed August 1524, Serial No. "k ll 6 42, and Great Iritain and Hell-1nd hug 11st This invention refers to electrically-coir trolled cloth guiders and the like wherein electrdmagnets are used tocontrol gu'iding rollers, andvwherein are teeler levers which are acted upon by the selvedges of the cloth and which in turn control the circuits of the magnets. The main object of this invention is to provide a new or improved circuit breaker or controller with each electro-1nagnet which will febetteradapted for rapid fand constant managing breaking con trolling) of the circuit and will not require the same attention, or to be renewed so nequery, as the ordinary netal-to-metal spring-pressed type ofi circuit breaker or controller. A further object is to provide an .improved arrangement of electricallycontrolled gamers as an attachment to, or an integral part theniachine with which they require to be used, instead ofbeing embodied in a separate machine Another object is to p'royide a construction of electrically-controlled gui'ders attached to or forniing' partof the machine and, adapted to guide two or mor s-man er cloth simultaneously. I The foregoing objects of the invention, together with meanswherebythe same may be carriedinto efiect, will best be understood from the following description of two forms or embodiments thereof illustrated in the accompanying drawings.

In said drawingsz I p I Fig. 1 illustrates a front elevation and I Fiei- 2 a Pl n Vie at he im r 910th guider according to one example of the invention. H V H v Fig. 3 is a plan iew of oi the invention, while U n a p igs. 4 and 5 illustrate crosslsections of partot theguider as shown inFigs. l and 3 i sp e vely dr s P M r er s le Fig. 6 illustrates a rear elev'ation, and v a Figs. 7 and 8 aleft and right hand View respectively drawn to a larger scale, of one of the roller and magnet units of the improved machine. V I U I I pp 7 Fig. 9 illustrates an enlarged sect onal elevation of the electrical inake-and-break inechanisnr used with the improved roller a further example and magnet units. v

Fig. 10 illustrates enlarged sectional elevation of a modification hereinafter described. a k M I Incarrying out the first part ot' the invention and as shown in Figs. 6 to 9 two gated carbon 6 first slides upon th e round 'carbonsn, Z), are employed, The carbon a is round in shape and the other carbon 6 is elongated or substantially rectangular in shape two of its lon er sides being slightly concave. The round carbon a is mounted on a pin a extending from a fixed metal plate a secured to an insulating block a, and the elongated carbon Z) is mounted on a plate-like lever (Z pivoted at its lower end to the feeler lever e. The metal plated? formed with a tongue or spur a with curved extremity, see Fig. 9, and lying the plane of the lever d carrying the elongated carbon 5 the normal position of the parts being with the two carbons in contact, i. e. one resting upon or against the other, in which position they complete the circuit of the adjacent On the teeler lever e movelectromagnet. V n ng towards the insulating bloclr c the eloncarbon at and then rapidly moves awaytrom same in the arc of a circle, this latter movement being broug t about the lever vd, carrying the elongated carbon, nieetingthe end of the metal tongue or spur a which tilts the lever about its pivot al on the feeler lever and thereby rapidly breaks the contact between the two carbons, On the feeler lever 6 moving in a direction the insulating block c the elongated carbon 6 is first quickly lowered by gravity into contact withthe round carbon a and then caused to slide thereon before coining to rest The lever 05 may be of vulcanitegor like insulating material and the carbon l b mayj lie against a facing of sheet copper (Z which will entend to a screw terminal d? on the lever, connected a flexible conducting wire 01* to a fixed terminal 0 on the insulating block 0. v V j Theinsulating block 0 is provided With the terminals c 0 c, c for the leads to and from the electro-magnets, the carbon holders, the main or source of current, and earth return. n n

The carbons may partake or other shapes but by making one round and the other elongated they allow of prolonged use; the round blocl; merely requiring to be given a slight rotation periodically when showing signs of wear, and the elongated block allowing of being reversed when Worn on. one side and of its four sides being brought tobear successively on the round block. lhe use of carbon contacts and particularly iii electrographite carbon contacts is found highly satisfactory in practice, and enables a current of high voltage to be used direct from a power main.

In the end brackets n, a, see Figs. 1. 2 and S are arranged the electrical terminal blocks to which the leads from the main are connected, and the leads to the guide roller magnets, the latter being connected in parallel.

In Fig. 1, the terminal block in the left hand bracket is connec ed by a three-wire cable 0 to the terminal block in the right hand bracket, and combined with one of the terminal blocks is a common switch 2) controlling the magnets of both pairs of guide rollers.

From each end terminal extends the further three wire cable which connected to the 'te minals c, c and c of the insulating block 0 of the contact breaker, see Fig. 9.

In carrying out the further features of the invention, the said improved electric controlling mechanism is housed in a metal box 7' provided on its rear side with metal straps or loops 7, by which it is slidably mounted on a metal bar g extending across the machine.

In one with the metal box is formed a guide plate 7L1 and detachably secured to said box is a further guide plate h' the two plates lying at a slight distance apart to allow the cloth to be guided to pass between. \Vith said box is pivotally mounted the feeler lever e which at its lower end has a pin or stud 6 which extends horizontally across the space between said guide plates, these latter being formed with slots h.

In a recess cast in one end of the box 7' is an electromagnet 2', the poles of which lie flush with or project slightly beyond the outer face of the casting and mounted upon the free end of one of the radius arms j, hinged to the guide plate l2 and carrying one of the guide rollers 71: is a soft-iron keeper or armature Z. In fixed bearings m on the guide plate if is the companion guide roller it the rollers lying parallel and their axes being inclined to the horizontal, see Fig. (5. The carrier bar extends from end bracket n to end bracket a or. from side frame to side frame of the machine with which the guiders are to be used. Or, when not desired, or when not practicable to make the apparatus integral with the machine, the said bar is mounted in separate brackets arranged in front of the machine.

For guiding a single width of cloth there will be two pairs of guide rollers 7J1, 732, one for one edge of the cloth and the other for the other edge, each pair being separately controlled. When two or more widths of cloth require to be guided at once, two carrier bars 5/, ,7 may be provided and one bar arranged to the rear of and slightly higher than the other, and each bar having its guide roll arranged below it, see Figs. 3 and 5. Upon one bar are two pairs of guide rollers and upon the other bar one pair, each pair being electrically controlled and each adjust-able along the bar to suit the width of cloth to be guided. In the case of narrow cloth, two or more widths of cloth may be guided by one bar, two or more sets of guide rollers being on said bar.

in rig. ll) the electrical contact breal-ier is arranged to operate with the feclcr lever pin (2 above, instead of below the contactbreaker. In this case the required rapid breaking movement is obtained by means of the fixed pin (0 against which the carbon, carrying lever d bears on the feeler lever moving it towards the block 0, the lever being pivoted and proportioned so as to cause the feeler lever pin or; normally to bear against the end of its cloth.

The carbon blocks a, Z) will preferably be detachably secured on their respective supporting studs or pins (4 and If by means of forked spring key members engaging grooves in the pins and flush with the carbons.

In the block b are small holes, one of which engages a pin on the lever e to prevent accidental displacement of the carbon.

lVhat we claim is 1. In electrically-controlled cloth guiders, a pair of end brackets, at least one cross-bar connecting said end brackets, pairs of boxes slidably mounted on said cross-bar, a pair of inclined guide rollers carried by each box, one roller being movable towards and away from the other, a pair of guide plates on each box, and a feeler lever for each pair of plates and rollers, an electro-magnet housed in each box, said magnets being connected in parallel, a circuit breaker also housed within each box, said circuit breaker comprising a pair of contact blocks one of which is relatively stationary while the other is capable of being moved bodily first in sliding contact with the stationary block and then rapidly away from said block, and vice versa, as set forth.

2. In electrically-controlled cloth guiders, a pair of end brackets. at least one crossbar connecting said end brackets, pairs of boxes slidably mounted on said cross-bar. a. pair of inclined guide rollers carried by each box, one roller being movable towards and away from the other, a pair of guide plates on each box,-and a feeler lever for each pair of plates and rollers, an electro-magnet housed in each box, said magnets being connected in parallel, a circuit breaker also housed within each box, said circuit breaker comprising a round stationary carbon block, and an elongated movable carbon block, means for pivot-ally supporting the movable carbon block on the feeler lever, the said lOt) the movable carbon, after sliding over the stationary carbon, is caused to move rapidly away in the arcof a circle, as set forth.

3. In electrically-controlled cloth guiders, guider units comprising a metal box with slotted lugs to allow it'to slidably fit a crossbar, bearings for the axis of a roller in one with said box, and a guide roller on said axis, a further roller and axis therefor, levers pivoted to the box for carrying said further roller axis, the axes of the two rollers being inclined, guide plates with slots and lying a slight distance apart, secured to the box, a pivoted feeler lever within the box having a cross pin which projects through the slots and across the space between the guide plates, an electro-magnet housed in the box and a circuit breaker also housed in said box, the circuit breaker comprising a pair of contact blocks, one stationary and the other movable, a relatively stationary plate with cam'-shaped edge carrying the stationary contact block, a lever made of insulating material carrying the movable block, said lever being pivoted on the said feeler lever, and lying in the plane of the plate with cam-shaped edge, and opposite such edge, and on the teeler lever being moved to break the circuit of the electro magnet, first sliding the movable contact block over the stationary block and then quickly separating the blocks, as set forth. In testimony whereof we have signed our names to this specification.

ABRAHAM WOOD.

'GRANVILLE l/VOOD.

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