US2418324A

US2418324A - Loom transfer mechanism

Info

Publication number: US2418324A
Application number: US607816A
Authority: US
Inventors: Stuer Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-07-30
Filing date: 1945-07-30
Publication date: 1947-04-01
Anticipated expiration: 1964-04-01

Description

April 1, 1947. STUER 2,418,324

LOOM TRANSFER MECHANI SM Filed July 30, 1.945 4 Sheets-Sheet l April 1, 1947. J STUER LOOM TRANSFER MECHANISM Filed July 30, 1.945 4 Sheets-Sheet 2 J. STUER LOOM TRANSFER MECHANISM April 1, 1947.

' Filed July 30, 1945 I 4 Sheets-Sheet 5 April 1947' J. STUER 2,418,324

LOOM TRANSFER MECHANISM Filed July 30, 1945 4 Sheets-Sheet 4 Patented Apr. 1, 1947 LOOM TRANSFER MECHANISM Joseph Stuer, Lawrence, Mass.

Application July 30, 1945, Serial No. 607,816

8 Claims. 1 This application is a continuation in part of application for United States Letters Patent by Joseph Stuer on Stationary magazine loom, filed September 2, 1943, Serial No. 500,947.

That application and this show a device or devices applied to a bobbin changing loom using one or more shuttles and having a reserve bobbin magazine and either one shuttle box or vertically shifting shuttle boxes under the magazine, transfer mechanism and a weft feeler. The devices covered in this application are part of a transfer mechanism which includes a hammer arm and a head for forcing a full bobbin to take the place of an empty bobbin in a cell or a shuttle box, and a dog arm to which a dog is pivoted in such a position that when it is moved in front of a hunter carried by the lay, this transfer dog and arm are pushed forward near front center whereby the hammer arm with its head is carried down onto a reserve bobbin thus effecting transfer of this bobbin into a shuttle.

The particular feature of this application is the mechanism for positioning the transfer dog to engage the bunter when the feeler, preferably of the electrical type, indicates near exhaustion and closes the circuit to a solenoid or magnet which pulls a spring locking pin, or equivalent member, which ordinarily holds the dog in inoperative position, but which pin when pulled against its spring by the solenoid allows the dog to assume either by the force of a spring or by gravity, its operative position with its free end in the path of the hunter.

Preferably I accomplish this by interposing a solenoid carried by the stationary frame of the loom and connected by a flexible member, such as a chain, with such a pin so that when the solenoid is energized by the action of the feeler, this pin is pulled out from in front of, behind, or out of engagement with the transfer dog arm allowing the dog to move or to be moved on its pivot. Preferably this pin is normally spring pressed and, instead of engaging behind the dog arm, it might engage a hole or recess in that arm but' in any case after transfer its spring will cause it to resume its holding or looking position.

This spring locking pin is carried by a dog controlling member carried by the dog transfer arm and is so associated with the dog as to compensate for the variations in the path of movement of the dog pivot, of the free end of the dog, and of the hunter, all of which could move in different paths.

In said application, I show a dog so pivoted and weighted that its free end is normally held in a position above the path of the hunter but which, when released by pulling a spring locking pin, drops by gravity or by spring action into the path of the hunter or into operative position.

However, as in some looms there is little room above the path of the hunter and the action of gravity is initially slow, I show another and preferred embodiment of my device in which the free end of the dog is normally held below the path of the hunter but when the pin is pulled to release the dog, the dog is instantaneously moved up into position by a dog setting spring.

Advantages of this device in its various embodiments are that the devices for positioning the dog in the path 01' the hunter are all carried by the dog holding transfer arm, except fora connection, which is preferably flexible, to a solenoid or similar electrical device which is energized by closing an electric circuit through a feeler.

The whole control is thus very much simplified and is not dependent upon the action of any cutter or other mechanism thus allowing such cutter or other mechanisms to be operated without reference to the dog and bunter.

With my preferred construction operable by a dog setting spring, the dog is instantly snapped into position so that it is possible to have the feeler located at the back of the loom under the magazine, the time interval between back and front center being enough to allow the spring to snap the dog into its transferring position.

It is obvious however that the feeler might be located in any position desired such as on the non-magazine side of the loom, at the front, or even above or below the box in which is the shuttle with the bobbin to be felt for indication and transfer. It is also clear that this quick cooperation between the feeler and the dog could be utilized in a magazine loom of any type such as of the single shuttle, single box type, multiple shuttle, or multiple box type.

The main idea of my device is to simplify the control of the. dog and I do this by using a controllingmember which may be of various kinds for various looms of different sizes and to accommodate different spaces. In all cases, the dog or device which is ngaged by a bunter on a loom is freely pivoted on the dog holding arm of a transfer device of a well known type and it is held out of reach of the hunter by a dog controlling device which in whole or in part is operable by an electric feeler andsolenoid whereby on transfer some part of, or the whole consemi 3 trolling member, is released allowing the dog to drop into position by gravity or allowing it to be raised, lowered or to be moved sideways.

Such a member may include a projection from the dog including a pin which when it is pulled out the dog drops by gravity; it may include an arm fixed to the dog carrying arm of the transfer which carries a spring arm with a hook on its end which normally holds the dog up out of the way; it may consist of a spring between the parts of a two part dog, one part pivoted on a horizontal pivot to the transfer arm and the other part pivoted to it on a vertical pivot, the solenoid being connected directly with that part of the dog which is toengage the hunter to pull it into position against such a spring which may be called the controlling member.

Preferably I use a dog controlling member which is pivoted on the same pivot with the dog on what I call the dog pivot shaft and which at times oan move independently of the dog and which normally includes a spring latch pin which when pulled against its pin sprin by the solenoid allows the dog to be dropped or causes it to be lifted as will be'described.

Throughout the specification and claims I use the term arm as applied to the member on which the dog is freely pivoted, although as shown in the drawings it ends in two members between which thedog is carried. because in some looms, this dog carrying arm starts as a single member and ends in a fork with two prongs and it is really one bifurcated arm.

For-c'lea rness I mean by transfer or transfer hammer-the device pivoted to the loom frame which is substantially a bell crank lever with two arms, one to carry a head to engage a full bobbin and-the other to support a dog.

In the drawings,

Fig.1 is a diagrammatic side elevation of part of an automatic loomof the stationary magazine type-showing part of the frame and part of the Jay, the front of the loom being shown as at the left and some parts being broken away, the bobbin transfer hammer with its arms and the dog being shown in their usual, normal or inactive position.

Fig. 2 is a diagrammatic-view of the feeler and its electrical connections with the solenoid.

Figs. 3, 4, 5, 6, and 6Awith parts omitted show one embodiment of my device.

Fig.3 is a side elevation of the transfer hammer arms, dog and connections together with the hunter and part of the lay, showing the dog in full lines after it has dropped into operative position in the path of the bunter.

Fig, 4 is a view similar to Fig. 3, but showing in full'lines the parts at or near front center, the controlling member being shown in the position it assumes when it is reset, the dog stop being omitted.

Fig. 5 is a detail side elevation enlarged, showing in full lines theusual position of a dog and its controlling member, and in dotted lines, the position ofthese parts after indication but before transfer. a p

Fig. 6 is an enlarged elevational view as from the left of Fig. 3, with the dog and associated parts in operative position.

Fig. 6A is a detail view partly in section as from the front showing the dog holding pin member position where itfholds the dog in its inact ve posi i n- F esto 1. sh w not e a preferred bodiment of my invention.

Fig. 7 is a view similar to Fig. 1 and Fig. 5 with the dog and its controlling member shown in full lines as inactive.

Fig. 8 is a view similar to Fig. 4 showing in full lines the parts as at about front center with the controlling member reset and before the dog has dropped.

Fig. 9 is a detail View similar to Fig. 5 of the dog, dog controlling member and resetting parts in inactive position with parts broken away for clearness.

Fig. 10 is an isometric view of the dog control- "ling member.

Fig. 11 is aview similar to Fig. 6 as from the leftof Fig. {7.

Fig. 12 is a detail view of a modified form of the spring pressed, dog holding pin.

Fig. 13 is a side elevational view similar to Figs. 1 and 7, showing the application of the device to a rotary magazine or battery loom, the

.dog controlling mechanism being that shown in Figs. "7 to 11.

Fig. 1a is a diagrammatic detail view like 'Fig.

5 of an embodiment similar to that .shown Fig. '1, the View showing in full lines the transfer arms, dog and other parts in their inactive and in .dotted lines their active position and Fig. '15 is a similar view showing the parts in the position that they assume when reset and transfer ring at front center.

Fig. 16 is a detail plan view showing another modification of the dog controlling means and "Fig. 17 is an elevation of the construction shown in Fig. 16.

Figs. 1.8, 19, 20 and '21 show still another modification of the dog controlling means, Fig. 18 being a view showing in full lines and Fig. '19 being a view as from the right of Fig. '18.

Fig. 20 shows the transfer arms with the dog and dog controlling means, together with the hunter part way between back and front center and Fig. 21 shows these same parts at substantially front center.

In Figs. 1 to 6A, I show the construction de- Pi scribed in my said application filed September 2, 1-943, Serial No. 500,947, as far as that shows and applies to the dog controlling means.

In all the drawings, L indicates the frame of a bobbin changing loom.

There ma or may not be a plurality of shuttles P, P, and vertically shifting shuttle boxes such as B. Each box might have a plurality of celis II or a single cell. I

M indicates a magazine which, as shown, is of the multiple stack type each stack I, 2, 3, 4, including a plurality of bob-bins such as A, A. On the lay 6, is a hunter 5 of the usual form and pivoted on the frame L at 8B is a transfer hammer H which has two arms [*2- and I3, one 12 carrying the usual head M for contact with a bobbin A on transfer and the other l3, having bearings 10 for a dog pivot shaft It which carries control member or latch N, and dog l5. 9 is the usual transfer spring. Z represents giveways. i

F indicates a feeler of the electrical type shown as positioned at the back of the loom frame, although it might be located in any other position, the feeler being provided with a contact switch 49 which, when its finger 48 slips on an almost exhausted bobbin, closes a circuit through the wires 4| and 42 from a source of electricity such as a battery 43 through a solenoid S. This solenoid S has a core 44 connectedby a wire-45 to a spring lock pin 46 which passes through and is" slidable in a spring lock pin hole I through I the dog I is loosely pivoted and is connected to dog I5 by an elastic member H8. The pivot I6 of both is so placed and the weight is so distributed that member N and dog I5 will drop to the position shown in full lines, Fig. 3, if not held back by pin 46.

Dog I5 also has a stop arm I8 which carries an adjusting stop screw II to limit the distance of the drop and to position the free end of dog I5 in the path of hunter 5.

Under ordinary circumstances, the pin 46 on account of the action of its spring 41 and when the solenoid is not energized has one end projecting from its hole I II in front of the dog holding arm I3, as shown in Figs. 1, 5 and 6A.

In this embodiment and when the pin 46 is pulled by the energizing of the solenoid so that its end clears arm I3, gravity allows the controlling member N, connecting spring I I8 and the dog E5 to drop down from the position shown by the dotted lines to the full line position shown in Fig. 3, so that dog I5 will be engaged by bunter 5 when the lay moves forward.

In Fig. 6, I show at one end of dog shaft I6 a holding collar I2 with a set screw I3 and there might be a similar collar at the other end but I combine such a collar with the dog controlling member N shown as adjustable by a set screw I4 and also serving to keep shaft I6 from slipping out of place.

As the arm I I9 or movable resetting member of dog controlling member N is directly in line with pin arm I26, it does not show in Fig. 6, but it alone supports follower II! which extends back of the arm I3 over until it is in line with the fixed guide or resetting member II6 on which follower III rides for reset-ting.

The operation is shown in Figs. 3, 4, 5. Starting when the feeder F indicates near exhaustion, the solenoid S pulls the pin 46 of the controlling member N against spring 41 so that its projecting end is clear of arm I3 allowing gravity to drop the member N connecting member I I8 and therefore dog I5 to a point in front of the bunter 5, Fig. 3, full lines, where when the bunter 5 goes forward it engages the free end of the dog I5, which pushes the dog forward, arm I2 down and head I4 down on a bobbin A which is forced into the shuttle.

away from the hunter until the next indication.

As the transfer hammer H with its spring 9 is pivoted at 85 on the frame, while the dog I5 is loosely pivoted on the dog pivot shaft I6 on the dog arm I3 and the hunter 5 moves forward with the lay on a fiat arc and pushes the dog with it,

as shown in Figs. 3 and 4, I find it desirable to have an elastic connection I I8 between the dog I5 and member N to allow the dog to move on a ;-;;fiat'arc and the dog" controlling member N to be somoved'that'pln 46 cansn'ap into position in front of arm I3.

The dog and member N are both pivoted at I6 on dog arm I3 and I therefore provide an elastic connecting member II8 between the control member N and the dog I5 which can yield but tends to pull them together.

The controlling member N has one pin carrying arm I26 through which is a pin hole III for pin 46 but also has another or resetting arm H9 at the end of which is a follower III which extends out so as to engage a fixed guide H6 and to ride up on it thus moving the pin carrying arm I20, with the pin 46, forward along the side face of arm I3 so that the spring 4'! for pin 46 can snap its end out in front of the dog arm I3 when that arm moves forward on transfer, thus holding member N in place but allowing the free end of dog I5 some freedom of movement. See Figs. 3 and 4. l

While so held, this controlling member N through the spring II8 allows the free end of the dog I5 to follow the bunter 5 back separating from the arm II9 as shown by the full lines in Fig. 4, until the bunter 5 leaves the dog as the lay recedes when spring connection I I 8 snaps the end of the dog up into its normal position as shown by the full lines in Fig. 5. When the pin 46 is again pulled out by the solenoid, the dog and the controlling member N again drop by gravity down into transferring position as shown by the full lines in Fig. 3. The dotted lines in Fig. 3 show the up or normal position of the dog I 5 and controlling member N when held up by pin 46 and spring II8 during the time between transfers.

When the hunter releases the dog, spring 9 returns transfer H to the position shown by'full lines in Figs. 1, 3 and 5.

Another and. preferred embodiment of my invention is shown in Figs. '7 to 11. In these views L represents the frame; P a shuttle; B a shuttle box; M a magazine; A a bobbin; S a solenoid; and F a feeler; all the same as in the first described construction.

The transfer hammer H has the arm I2 and head I4 but the other arm to which the dog I5 is pivoted is indicated by 23 and is similar to 13 and, as shown, it is bifurcated. It has bearings I26 similar to Ill for a dog pivot shaft 26 similar to IE except that this shaft is turnable in the bearings I26 while I6 may or may not be so turnable.

In place of the dog control member or latch N, I use in this case a member C which has a pin arm 20 through which is a, hole 2I for a spring lock pin 22 normally urged by spring 24 to project so that it can go in behind of, instead of in front of, the dog transfer arm 23. By means of aflexible member or chain 25, it is connected to the armature of the solenoid S as in the other construction.

Member C has an arm 30 which I will call a stop arm as it has a laterally projecting web 3! which extends in front of arm 23 and limits the pivotal motion of member 0 by engaging the front of arm 23.

There is a third arm 35 which extends down and engages the front or heel I9 of dog I5 and carries a set screw 36 by which the position of the dog I5 can be adjusted.

The normal or between transfers position of dog I5 is shown by the full lines in Figs. 7 and 9. with its free end below the bunter 5.

There is also a dog setting tension spring pin 3I infmember C to which one end of a dog setting 7 tension spring :38 is connected, the other end of spring 38 being attached to another pin 39 on some part of the frame L. The position of this pin 3 1 on member C and'ithe. iposition rof pin i 39 on the frame are such that spring 38 tends to move member C so that :arm 35 and set screw 36 will push against the heel I19 ofdog :I'i5, thus lifting the free end of the dog as shown by the dotted lines in Fig. 7, in front of the hunter 5 where it may be'positioned'by a'stop I25.

This dog I5 is freely-mounted on dog pivotshaft 26 but member .Ci-s fixedthereto andthere isia'lso fixed thereto a resetting arm 50 which moves with member C and the shaft 25 and is so positioned, asby'a set screw 53, that when transfer dog arm 23 is in its usual position and the pin 22 of arm '25 is engaging the'back of arm 2:3, arm :50 i out of contact with :a stop 51 fixed to the frame L. Arm 50 isalso ou t'of contact with or just touching stop 5I when pin 22 is first released so that the parts "are in dotted line position shownin Fig. '7 and whenlock pin 22 is bearing against the side of transfer dog arm 23. However as hunter 5 moves forward with the lay, and pushes the dog I5 with its arm 23 forward, this resetting arm 50 engages the stop 5| with the result that it holds the end of pin arm 20, where release pin hole 2| and pin 22 are located while :dog arm 23 is'moving forward until the pin 22 springs into place behind it as-shownin Fig. 8.

During this holding period, the heel I9 of the dog I5 is disengaged from the set screw 36 and, the dog I5 being limited in its upward movement as the lay beats up by fixed stop I25 if necessary, the dog I5 and its controlling member move independently, coming together :as shown in Fig.

8, instead of separating as do dog I and member N of the first construction, while the free end 7 of the dog andof the Lbunteriare moving together its spring can be combined .as a sprin hook K,

the part 5.0 serving as a locking pin and the part '6 I beingxthe spring.

This also shows that a locking pin such as '50 instead of engaging either the front or back of the "dog arm ofthe transfer might enter a pin hole BZnear itsfront or back.

Eit-her embodiment shown herein can be used :in connection with a rotary magazine or battery such asG. I show in .Fig. .13, a :rotary battery G of a well known type with :adog I 5 pivoted to a dog arm of the transfer hammer 'H, adogcontrol member C which is resiliently connected with :the dog and which carries a spring lock pin 22 which normally locks the :control member C of the dog so that "the :free end of the :dog is below the pathof the hunter 5, the lock pin being flexibly connected with a solenoid or .a similar device which is energized by :an electrically operable feeler which-closesa circuit to the solenoid when the ieeler movesrso as to indicateexhaustion.

Z, Fig. 1, represents the giveways or the usual means :to receive a full .bobbin which has been released from astationary magazirre :and to hold it in position to be transferred into a shuttle box 011 the .lay.

.-As magazine orxbatteryzG, turns ina wellknown could be provided, .if necessary, with additional zadjusting screws.

For convenience, I will call the resetting arm HQ with the follower I'I I .a movable resetting :member and guide 501 member H8 a fixed resetting member-as these terms describe similar .devices in both embodiments shown.

The dog controlling member such as [N or C includes a spring actuated locking pin such as 4.6, 22 or 50; a ,movable resetting member such ,as H3 and Ill orarm 50 and 5a fixed resetting membersuch as I H3 or :5-I.

The member connecting a locking pin-such as 46 or .22=with:a.solenoid should preferably be flexible but, depending on the distance, it might be a link such, .for instance, as shown at 45 .in Fig. 6.

As the arms H9 .=and I29 of the construction shown in Figs. .1 .to GA-are integral with the numberN, that member N as well as the dog .I.5,might be pivoted free on the shaft .I6,1but, as shown in Fig. 10, the similar members 20 and .50 of the construction shown in Figs. 7 to '11.-must.m0ve with insteadof on the dog, pivots'ha'ft 26.

The preferred constructions .here described require resetting devices of a character which will admit .a certain amount .of freedom between the dog and its member as the "lay advances after the hunter engages the dog but will reset "the parts for the next transfer.

A simplified construction wherein the dog I5 is fixed, directly on .the dog shaft 16 which is turnable is shown 'in'Figs. 1, 14, .and 1.5. In that case there is acontro'lling member'Xlike 1N also fixed to dog shaft I5 in which is. the pin 46 but, as shown in all three views, the path of the hunter 5 as it forces the dog and its pivot shaft forward is such that this dog controlling member fixedto the dog shaft is so moved from the position shown in Fig. 14 to that-shown in Fig. 15 that the pin 46at fron't center springs back into place in front of the dog carrying arm 'I 3. When pin 46 is pulled, dog IB'dr'ops to'the dotted line position .shown in Fig. .14.

In Figs. 16 and 17 I show a dog in two parts I'GI Land I63 part IEI being pivoted at I62 to the dog arm '60 on a horizontal pivot and the part I63 being pivoted to the part IBI on a vertical pivot I54, there being a spring 65 between the parts I61 and 163 which tends to keep the part I 63 away from the bunter 6-1 as shown in Fig. 16 but when it is pulled by 'a connecting member from a solenoid S, it 'is'engaged 'bythe hunter and is not released until the hunter lets go of it when it springs sideways to its usual 'positionshown by full lines in Fig. 16.

In Figs. 18, '19, '20, and 21, I show an arm 8| extending backward from the dog arm I3 and from this extends downward a latch 82 with a hook 133 at the end preferably'bevelled 'olf at 84.

When this hook83 is-pulled out from under the .dog LI 5, by the flexible member from thesolenoid S, the dog'drops by gravity to a position in front of the hunter '5 pre'ferabl'y being checked in the right position as byacheck arm 85 and set screw 86 similar to the arm I-8 and set screw II as shown by the :dotted lines in Fig. 18.

i ls-the lay and hunter move forward, as shown 19" in Figs. '19 and 20, the arm 8| attached to the dog holding arm 13 which is substantially parallel with the hammer head arm I2 is moving down with the hook or spring latch 82 while the dog 15 is remaining level or as'shown in Fig.20 moving a short distance up so that it slips along the bevelled surface 84 of the hook 83 until it is caught by the hook which at this time has been released by the solenoid, the dog therefore being reset by the dog controlling memberO which includes parts SI, 82, 83, 84.

When the transfer spring 9 returns the transfer H to its usual position spring latch 82 carries clog I with it to the position shown by the full lines in Figs. 18 and 19 ready for the next trans- *fer.

I claim:

1. In a bobbin-changing loom having a stationary frame and a movable lay, a bunter carried by the lay on the magazine side to engage the free end of a dog, a magazine holding two or more bobbins and including devices to hold a full bobbin for transfer, a shuttle box carried by the lay to be in position under the full bobbin holding means, bobbin transfer mechanism including a transfer hammer having an arm to engage said full bobbin and a dog holding'arm, a weft feeler, said weft feeler being of the electrically operable type; a dog freely pivoted to the dog holding arm; a stop to check the dog in bunter engaging position; a dog controlling member carried by and movable with the transfer hammer, said member including spring actuated means to hold the dog out of the path of the bunter; and a solenoid in circuit with and energized by the weft feeler and including an armature and a connection from the armature to the spring actuated means to release the dog when the feeler indi-- cates exhaustion and to allow the free end of the dog to move into the path of the hunter.

2. In a bobbin-changing loom having a stationary frame and. a movable lay, a hunter carried by the lay on the magazine sid to engage the free end of a dog, a magazine holding two or more bobbins and including devices to hold a full bobbin for transfer, a shuttle box carried by the lay to be in position under the full bobbin holding means, bobbin transfer hammer having an arm to engage said full bobbin and a dog holding arm, a weft feeler, said weft feeler being of the electrically operable type; a dog freely pivoted to the dog holding arm; a stop to check the dog in bunter engaging position; a dog controlling member carried by and movable with the dog holding arm, said member including spring actuated means to hold the dog out of the path of the bunter; and a solenoid in circuit with and energiZed by the weft feeler and including an armature and a connection from the armature to the spring actuated means to release the dog when the feeler indicates exhaustion and to a low the free end of the dog to move into the path of the bunter.

3. In a bobbin-changing loom having a stationary frame and a movable lay, a bunter carried by the lay on the magazne side to engage the free end of a dog, a magazine holding two or more bobbins and including devices to hold a full bobbin for transfer, a shuttle box carried by the lay to be in position under the full bobbin holding means, bobbin transfer mechanism including a transfer hammer having an arm to engage said full bobbin and a dog holding arm, a wait feeler, said weft feeler being of the electrically operable type; a dog shaft carried by the .dog holding arm and a dog freely pivoted on'said dog shaft; a stop to check thedog inbunterv engaging position; a dog controlling member carried by and movable with the'bobbintransfer hammer, said member including a spring pressed dog holding part to hold the dog out of the path of the bunter; and a solenoid in circuit with and energized by the weft feeler and-including an armature and a connection from 'the armature to thevdog holding part to release the dog'whenthe feeler indicates exhaustion and to allow the free end of the dog to move into th path of the bunter.

4. In a bobbin-changing loom having a stationary frame and a movable lay, a bunter car'- ried by the lay on the. magazine side to engage the free end of a dog, a magazin holding two or more bobbins and including devices'to. hold a full bobbin for transfer, a shuttle box carried by the lay to be in position underzthe full bobbin holding means, bobbintransfcr mechanism in-- =cluding a transfer'hammer having "an arm :to

the dog holding arm and a dog freely pivoted on saiddog shaft; a stop to check the dog in bunter engaging position; a dog controlling member carried byand movable, with 'the dog I holding :arm,:said, member including a spring pressedjdog :holding pin to holdthe dog out of the path of the hunter; and a solenoid in circuit with and energized by the weft feeler and including an armature and a connection from the armature to the dog holding pin of the controlling member, to release the dog when the feeler indicates exhaustion and to allow the free end of the dog to move into the path of the bunter.

5. A device of the character described in claim 4 in which the dog controlling member and dog are separately movable and are connected by spring means; and resetting means for the dog controlling member.

6. A device of the character described in claim 4 in which the dog controlling member and dog are separately movable, the dog controlling mem ber having a dog lifting arm; a spring to so move the dog controlling member that its dog lifting arm lifts the dog so that its free end. is in the path of the bunter; and resetting means for the dog controlling member.

7. In a bobbin-changing loom having a stationary frame and a movable lay, a bunter carried by the lay on the magazine side to engage the free end of a dog; a reserve bobbin magazine holding two or more bobbins and including devices to hold a full bobbin for transfer, a shuttle box carried by the lay to be in position under the full bobbin holding means, a bunter on the lay, bobbin transfer mechanism including a transfer hammer with an arm to engage said bobbin and a dog holding arm, a weft feeler, said weft feeler being of the electrically operable type; a dog shaft carried by the dog holding arm; a dog freely pivoted on said dog shaft; a stop to stop the dog in bunter engaging position; a dog controlling member carried by and movable with the dog shaft, said member including a holding pin arm through which is a holding pin hole, a spring connecting it with the dog and a resetting arm movable with the holding pin arm; a spring pressed dog holding pin passing through said holding pin hole and projecting therefrom when free to engage the transfer hammer dog arm to hold the dog out of the path of the bunter; and

weft' feelen and including: an armature: and: a

. flexible connection from: thexarmature tn the: dog

holding pin tic-release thatpiir fromnthe dog arm when; the feelers indicates exhaustion; to allow; the free, end of the dog to. move into thei'path. of the hunter; and a: resetting stop fixed to the frame toengage the; resetting arm of the dog; control;- lingmember whenthe buntermoves the: dog arm of: the transfer towards thev front: of the 100m.

8'. In a bobbin-changing" loom; having; a: sta, tionary frame and a movable: lay, a hunter carried by the lay on the magazine side toengage the free endofi'a dog; a stationary reserve bobbin magazine holding two orrmore vertical stacks of bobbins" andincluding: devices to: hold a full 'b0bbin;,f0r. transfer; ashuttlebox carriedv by the lay 1 to: be: in position underthe: full. bobbin hold.

"ingrmeans;abunter-on thelay', bobbin transfer mechanism includingatransferhammer with an arnrt'o: engage said; bobbin and a dog holding arm; a weftt .feeler, saidweftnfee'lerbeing of the electrically; operable.- type'; a dog shaft? carried by the: dogholding arm; a dog; freelypivoted on said d'ogshaft; a stop tolstop the dog in bunter engaging position; a dog controlling member carried by andf movable with the dog shaft,.said member including a. holding pin arm through which is: a. holding: pin hole; a dog: moving arm and? a: resetting arm; movable with the: holding pinarm; an-- engaging springconnected; to: the

12 controlling; member: for moving: it: and with it the dog-movingarm and: the free-endof the'dog intothepath of the1bunt'er;;a spring pressedidog holding pin passinggthrough said-holding; pin, hole and projecting therefrom when free: to engage the transfer hammer dog arm to hold thedo out of the path; at thebunter; and asolenoid, in circuit with andv energized bythe weft feeler and including; an armature; and a; flexibleconnection from the armature tor the:- dog: holding pinto 1'8;- lease that pin from theedog arm when the feeler indicates exhaustion, whereby the dog; is moved by" the engaging spring; and the dog controlling memberso that therfreeendiofi the dog is in the path: of the 1 hunter; and L a, resetting 7 stop fixed; to the frame to engage the resetting arm of the dog controlling member when the bunt-er; moves the dog; armof; the transfer towards the front offt'he. loom.

JOSEPH STUER.

REFERENCES, CITED.

The following references are of record in the file of this patent:

UNITED STATES" PATENTS Number. Name Date 2",20f7g078 Stuer Jan. 12, 1939 2 2645462: Stuer -7.-- Dec. 2, 1941 30 25353323 Stuer:-- July; 11 1944