US1112366A - Loom. - Google Patents

Description

J. F. DUSTIN.

' LOOM.

APPLICATION FILED SEPT. 6, 1911.

1-, 1 1 2, 36 6 ted Sept. 29, 1914.

2 SEEET88HEET 1.

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721'; NORRIS PETERS 60.. PHom-LITHQ, WASHINGTON, D. C

J. F. DUSTIN.

LOOM.

APPLICATION FILED saw. a, 1911.

1 ,1 12,366. Patented Sept. 29, 1914.

2 SHEETS-SHEET 2.

UNITEDSTATES PATENT OFFICE.

JOHN F. DUSTIN, 0F FULTON, NEW YORK.

LOOM.

Specification of Letters Patent.

Patented Sept. 29, 1914.

Application filed September 5, 1911, Serial N 0. 647,790.

To alien/ 1 0117, it may concern Be it known that I, JOHN F. DUSTIN, a citizen of the United States, residing at Fulton, county of Oswego, State of New York,

have invented an Improvement in Looms, of

which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to looms and particularly to looms of that type employing a shifting shuttle box, and the object of the invention is to provide a novel loom stopping mechanism which is rendered operative whenever the shifting shuttle boxes bring a shuttle into operative position at a time while another shuttle is also in operative position on the lay. a

In the operation of a drop box loom 1t sometimes happens that through faulty mechanism the shifting shuttle boxes will bring a shuttle into position to be thrown across the lay by the picking mechanismwhile the shuttle which has previously been in operation is still occupying a position on the lay or is boxed at the opposite end of the lay, and when this condition arises the presence of two shuttles in position on the lay will cause a smash or some other injury to the loom or fabric being woven.

My invention aims to prevent such a,

catastrophe by providing means for stop ping the loom whenever two shuttles are sm'iultaneously in position to be thrown' across the lay by the picking mechanism.

I have. illustrated herein a construction embodying my invention which will demonstrate the principle thereof, it being understood, of course, that the constructional details may be varied without departing from the invention.

Figure 1 is a vertical section through a loom having my improvements applied thereto. Fig. 2 is a sectionon the line ww,

Fig. 1, showing the lay and the harnesses in front elevation; Fig. 3 is a view showing, the operation of the loom-stopping m'echanism; Fig. 4 shows the vshuttle detecting mechanism; Fig. 5 is a detail view of a;

portion of the knock-off mechanism.

I have shown in the drawings a loom having a frame 1, a breast beam 2, a lay 3 which is supported on the lay swords 4, a

crank shaft 6 which is connected to and which operates the lay through a connecting rod 7 a shipper lever 8, and a knock-off lever 9. These parts are or may be of any well-known construction and as they form no part of the present invention I do not deem it necessary to give any furtherdescription thereof.

The loom shown is ofthe drop box type 1 and the lay3 has at one end a shuttle boxlO provided with the usual binder 11 and at the other end a set of shifting shuttle boxes 1 12, each of which is also provided with a binder 13. As stated above, it 'sometinies happens in the operation of a loom of this type that the shuttle boxes will bring a shuttle 14L into position to be thrown across the lay 3 while another shuttle 15 is still boxed in the shuttle box 10, and when this occurs the presence of either shuttle in its shuttle box will, of course, prevent the other shuttle from being properly boxed when it is thrown across thelay,and the failure of open at two points, means to close the circuit during themovement of the lay at one point when the shuttle is boxed in the shuttle box 10 and at the other point when a shuttle is boxed in one of the shifting shuttle boxes, so that the circuit will be completely closed whenever a shuttle occupies each of the shuttle boxes, as shown in Fig. 2, and

. means operated by'the closing of the circuit to actuate the knock-off lever stop the loom. v y

'17 designates the usual protector rod which is provided with the fingers 16 that engage thebinders l1 and 13 respectively. Looselymounted on the protector rod 17 at 9 thereby to each end thereof is a shuttle detector inthe .form of an arm 19 provided with a portion 18 that is adapted to engage the binder 11 ory13. Each shuttle detector 19 is acted on by a spring 20 which encircles the protector rod and operates to hold the detector against the binder. Each detector 19 carries at its lower end a wiper contact 21, said contacts being insulated from the other parts of the loom in some suitable way. As herein illustrated each contact is provided with a stem 22 which enters and is secured to a sleeve 23 of insulating material that in turn is secured to a projection 24 rigid with the detector arm 19.

Each contact 21 cooperates with a pair of contacts or terminals 25 that are insulated from each other in some suitable way as by being sustained by a, support 74 of insulat ing material, (but are situated in an electrical circuit of the loom-stopping mechanism. As herein shown one contact of one pair of contacts 25 is connected to or grounded on the loom frame by a wire 26 and the other contact of said pair is electrically connected to one of the contacts 25 of the other pair by a wire 27. The other contact of said latter pair is connected by a wire 28 to a magnet 29, and the latter is connected by a wire 30 to a battery 31 or other source of electrical energy, said battery being, connected in turn to the loom frame.

i The wiper contacts 21 are carried by the lay and therefore during the movement of the lay they pass over the contacts 25. The construction is such, however, that neither contact 21 will engage its contact 25 exceptwhen a shuttle is in the box. Nhen there is noshutltle in the box and the binder consequently is in its inmost position the spring 20 will throw the shuttle detector forwardly into the full line position, Figs. 1 and 4, and thus carry the corresponding contact wiper 21 into such aposition that it will pass over the contacts as the lay vibrates without engaging said contacts. hen a shuttle enters the box, however, said shuttle will force the binder outwardly thereby swinging the detector arm 19 into the position shown by dotted lines Figs. 1 and 4, and when the arm 19 occupies this position the contact 21 is thrown into such a position that it will contact and have a wiping engagement with the contacts 25 when the lay moves backwardly. From the above it will be seen that during the normal operation of the loom first one contact 21 and then the other is brought into engagement with the contacts 25 as the Since the circuit is closed al ternately at the contacts 25, however, the loom-stoppingmechanism does not operate under ordinary circumstances. If, however, for any reason a second shuttle 14 is lay vibrates.

brought into operative position While the shuttle 15 is still in the box 10, then upon the next operation of the lay thecircuit will be closed at both pairs of contacts 25, and

when this occurs the magnet 29 is energized thereby to operate the knock-off lever 9 and thuseifect the stopping of the loom.

Various mechanisms may be employed for operating the knock-off lever 9 when the magnet 29 becomes ener ized. As herein shown the armature 32 for said magnet is carried by a lever 33 which is pivoted at 34 to an arm or bracket 85 that is carried by the loom frame and preferably insulated therefrom. The lever 33 has connected to one end thereof a linkuSG which is also connectcd to a. lever 37 that is pivoted at 38 to a longitudinally-extending rod or member 39 which is connected at 40 to an arm 41 and operates in a. guide 49. This arm is pivoted to the loom frame at 42 and is adapted to engage the knock-off lever 9.

43 is a dog which is pivoted at 44 to the bar or member 39, said dog having a nose 45 which is adapted to be engaged by an cxtension 46 formed on the end of the lever Said dog is also provided with a tail which is adapted to be engaged by a hook fast on one of the law swords whenever the loom-stopping mechanism is operated.

Under normal. conditions when the magnet is deencrgized, the weight of the parts holds said parts in the position shown in Fig. 1, in which position the tail 47 of the dog is below the path of movement of the hook 48 so that during the vibration of the lay said hook does not engage said tail. lVhenever the magnet 29 is energized, however. the armature 32 will be drawn down- "ardly, thus swinging the lever 33 and raising the lever 37, which operation causes the extension 46 to act against the nose 45 of the dog thereby to swing the tail of the dog upwardly into position to be engaged by the hook 348, as seen in Fig. 3. The dog is so situated that when the tail thereof is raised the hook 48 will engage said tail just after the lay begins its rearward movement, and the engagement of said hook with the dog will draw the member 39 backwardly, thus operating the knock-off lever and stopping the loom. The dog is so situated that this operation of stopping the loom will occur before the shuttles are thrown, or at least before the lay beats up again, so that there is no danger of a smash occurring.

While it would be within my invention to connect the battery 31 directly to the loom frame, yet I prefer to interpose in the circuit an additional circuit breaker which will maintain the circuit open during the forward movement of the lay so as to prevent the circuit from being closed by the contacts 21 except when the lay is moving ba'ckwardly. This additional circuit closer is shown as a wiper 50 fast on the crank shaft 6 and adapted to engage a spring contact 51 which is connected by a wire I with the battery 31, said contact being carried. by the loom frame, but insulated thcrefrom. as at 53. The wiper 50 has a semicircular shape and is so arranged on the shaft that it will bein engagement with the contact 51 when the lay is moving backwardly, but will be disconnected from or out of engagement with said contact when the lay is moving forwardly. Fig. 1 shows the crank shaft 6 on the back center with the wiper 50 just passing oft from the contact 51. The member 37 is shown as having a projection 56 which is adapted to be enby a lug 5'!" on the lay sword when said member is raised by the energization of the magnet 29. I provide this construction so as to insure that the loom will be stopped if for any reason the hook 48 does not engage or slips off from the dog 43.

designates heddle frames of ordinary construction.

From the above it will be seen that I have provided a simple mechanism for stopping the loom whenever two shuttles accidentally come to occupy operative positions on the lay, and while I have illustrated herein one embodiment of the invention I do not wish to be limited to the constructional features shown. Q

I-Iaving fully described my invention, what I claim as new and desire'to secure by Letters Patent is 1. In a loom, the combination with a lay having two shuttle boxes, of a shuttle detector associated with each shuttle box and arranged to occupy one position when a shuttle is in the box and another position when the box is empty, each shuttle detector having a wiper contact associated therewith, which contact moves in one path when a shuttle occupies the corresponding box and in another path when there is no shuttle in the box, an electric circuit having two pairs of separated stationary contacts, each pair of stationary contacts being situated to be engaged by the corresponding wiper contact when it moves in the first-named path, and means to stop the loom when the circuit is closed simultaneously by both wiper contacts.

2. In a 100111, the combination with a lay having at each end a shuttle box provided with a binder, of a shuttle detector adjacent each shuttle box and operated by the binder thereof, a wiper contact associated with each shuttle detector and situated beneath the lay, each wiper contact moving in one path when a shuttle occupies the corresponding box and in another path when there is no shuttle in the box, an electric circuit having two pairs of stationary contacts situated to be engaged by the wipers when they move in the first-named paths, and means to stop the loom when the circuit is closed simultaneously at both pairs of contacts.

3. In a loom, the combination with a lay having at each end a shuttle box provided with a binder, of a shuttle detector pivoted to the lay adjacent each shuttle box, each ing wiper contact in position'to engage the stationary contacts as the lay vibrates, and means to stop the loom when the circuit is closed simultaneously at both pairs of sta tionary contacts.

4. In a loom, the combination with a lay having two shuttle boxes, of a shuttle detector associated with each shuttle box, a normally-open circuit having two pairs of separated. stationarycontacts, a wiper contact carried by each detector, each detector when actuated by a shuttle in the corresponding shuttle box moving its wiper contact into position to engage the corresponding pair of stationary contacts as the lay vibrates, and means to stop the loom when the circuit is closed at both pairs of stationary contacts simultaneously.

5. In a loom, the combination with a lay having a shuttle box at one end, of shifting shuttle boxes at the other end, a knockoil lever, a member connectedthereto and extending beneath the lay, a dog pivoted to the member, a hook rigidly carried by the lay, and means to move said dog thereby to bring it into the path of the hook whenever the shifting shuttle boxes bring a shuttle into operative position while another shuttle is also in operative position.

6. In a loom, the combination with a lay having a shuttle box at one end, of shifting shuttle boxes at the other end, a hook movable with the lay, a knock-oft lever, a member connectedthereto and extending bencath. the lay, a dog pivoted to said memher and normally occupying a position out of the path of movement of said hook, and

means to throw said dog into the path of movement of the hook whenever the shifting shuttle boxes bring a shuttle into operative position while another shuttle is also in operative position, said dog being so posi tioned as to be engaged by the hook when the lay begins its backward movement.

7. In a loom, the combination'with a lay having a shuttle box at one end, of shifting shuttle boxes at the other end, a knoclcofi' lever, a member connected thereto, a dog pivoted to said member, a hook carried by the lay, a shuttle detector associated with each shuttle box, a normally-open circuit having two pairs of separated stationary contacts, a wiper contact carried by each shuttle detector, each detector when actuated by a shuttle in the corresponding shuttle box moving its wiper contact into posi- & 1,i12,366

tion to engage the corresponding pair of staname to this specification, in the presence tlonary contacts as the lay vlbrates, and of two subscribing wltnesses. means to move said dog thereby to bring 1t into the path of the hook When the circuit JOHN DUSTIN 5 is closed at both pairs of stationary con- \Vitnesses:

tacts simultaneously. LOUIs 0. SMITH,

In testimony whereof I have signed my FREDERICK S. GREENLEAF.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, .D. O.

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