US2465615A

US2465615A - Harness stop motion attachment for looms

Info

Publication number: US2465615A
Application number: US672730A
Authority: US
Inventors: John R Svancarek
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-05-28
Filing date: 1946-05-28
Publication date: 1949-03-29
Anticipated expiration: 1966-03-29

Description

March 29, 1949. J. R. svANcAREK 21,465,615

HARNESS STOP MOTION ATTACHMENT FOR LOOMS Filed May 28, 1946 {o} '0) fr 4 n Il Il l I ll fl ll Il I l Il Il u l l1l u ll Il Il I 0125- f2 Il lo ,//0 40 53 S .l

3, U 'd 'i m U m Q @m39 Patented Mar. 29, 1949 HARNESS STOP MOTION ATTACHMENT FOR LOOMS John R. Svancarek, Homewood, Ill.

Application May 28, 1946, Serial No. 672,730

7 Claims.

This invention relates to improvements in looms, and more particularly to a harness stop motion attachment therefor.

An object of the invention is to provide an improved harness stop motion attachment for looms which will automatically stop the loom in case of a heddle-strap break.

Another object of the invention is to provide an improved harness stop motion attachment for looms which will not only sto-p the loom from operation should a heddle-strap break, but will also close a switch mechanism for operating an audible or visual signal so that the loom operator will immediately know when a heddle-strap l breaks thereby permitting the heddle frame to fall on the contact bar of the attachment to stop the loom and to close the circuit to an audible or visual signal which will indicate to the loom operator that there is trouble.

Another object of the invention is to provide :M

improved means for completing the electrical circuit in the event of disarrangement or dropping of one or both ends of the harness frame, as happens when the straps for actuating the same become stretched or broken, so that the loom will automatically stop,

A further object of the invention is to provide improved attachments for looms, one of which will be mounted in each end or" a group of harness frames to be engaged by a heddle frame should the heddle-strap break, to stop the motion of the loom and to close the circuit to an audible signal to notify the loom operator that there has been a breakage.

Other objects will appear as the description proceeds.

In the accompanying drawings which form a part of this application,

Figure l is a side elevation of a loom frame showing a heddle frame supported therein and a pair of the improved. harness stop motion attachments in position below said heddle frame;

Figure 2 is a side elevation of o-ne of the improved stop motion attachment devices showing the resiliently supported Contact bar and the spaced switch mechanism for connection with the audible signal, and

Figure 3 isa sectional View taken on the line 3-3 of Figure 2.

Like characters of reference are used throughout the following specication and the accompanying drawings to designate corresponding parts.

In carrying out the invention, there is pro- 'vided an improved loom frame having two spaced uprights I and 2 having a cross bar 3 and a head bar 4.

VThe heddle frame 5 is shown supported by the two straps or cords B and 1 passing over the pulleys 8 and 9 supported upon the head bar 4.

Disposed under each end of the heddle frame 5 is a stand having a base member lil and vertically extending frame members il and l2, which are slotted adjacent their upper ends and adjustably support the upper frame members i3 and i4. The frame members i3 and iii are connected together by means of the spaced transversely extending bars or rails I5 and i6, and support the bolts i1 and i8 extending through said frame members i3 and i@ and through the slots i9 and 2Q formed in the lower frame members li and l2, whereby the upper frame members may be adjusted to a position immediately below the said heddle frame 5.

inwardly directed angle irons 2l and 22 are secured to the inside surfaces of the upper frame members i3 and Mby means of the bolts '23 and 24, and said angle members adjustably support the contact heads 25 and 255 formed on the upper ends of the screws 21 and 2S which are threaded through the horizontally extending portions oi` the angle members 2i and 22, and are held in the desired adjusted position by means of the nuts 28 and 3Q disposed above and below each of said angle members 2i and 22.

The contact bar 3i is provided with a metal strip 2:2 extending along its undersurface for Cooperation with the

contact heads

25 and 25. A bracket 33 will be secured to the lower surface 0;? the metal plate 32 and will be provided with a transverse pivot shaft 3d upon which the eye of the Contact bar supporting rod 35 is mounted. The rod 35 extends through an aperture in the upper cross frame member i5 and a spring 36 is positioned about said rod 35 to resiliently support said Contact bar. A second bracket 3l is secured to the undersurface of a metal plate on the contact bar 3i and is provided with the bearing pin 38 which supports the eye at the upper end of the guide rod 39, which likewise extends through an aperture in the cross frame member l5 so that the Contact bar will be held in proper alignment underneath the series of heddle frames. An electric Wire til will be secured between the metal angle brackets 2i and 2i. to electrically connect the same, and an electric wire il and the wire l2 attached to the metal strip 32 on the contact bar 3l will be connected with a batte-ry 43 and a bell i4 or red signal lamp, whereby should one of the heddle-straps or ropes 6 and 'i for each heddle frame break or in the event that a warp end is broken or unduly slack, the heddle frame will be dropped on the contact bar 3l, thereby forcing the same downwardly to engage the

base contact heads

25 and 25, thereby closing the circuit to the battery i3 and lili which will cause the electric bell 44 or red signal lamp to operate thus warning the loom operator that there has been a breakage. If desired, these attachments located at either end of the heddle frames and below the same may be arranged to stop the operation of the loom when a heddle frame is released below its proper level,

From the foregoing description, it will be apparent that there has been provided a highly efficient construction of harness stop motion attachment for looms, which will be positive in action and relatively inexpensive to manufacture and produce.

While the preferred embodiment of the instant invention has been illustrated and described, it will be understood that it is not intended to limit the scope of the invention thereto, as many minor changes in detail of construction may be resorted to without departure from the spirit of the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination with a loom having a harness frame, an electric stop motion comprising a stand disposed below the frame, extension members adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to saidfextension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the Contact members.

2. In combination with a loom having a harness frame, an electric stop motion comprising a lstand disposed below the frame, extension members adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to said extension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the contact members, said contact bar supporting means including a pair of depending shafts inserted in apertures formed in the transverse rails, and connected to said contact bar, means for selectively retaining the bar out of engagement with the contact member.

3. In combination with a loom having a harness frame, an electric stop motion comprising a stand disposed below the frame, extension members adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to said extension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the contact members, said contact bar supporting means including a pair of depending shafts inserted in apertures formed in the transverse rails, and connected to said contact bar, means for selectively retaining the bar out of engagement with the contact member, said last-mentioned means including a spring received around one of the shafts above the transverse rails.

4. In combination with a loom having a harness frame, an electric stop motion comprising a stand disposed below the frame, extension menibers adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to said extension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end Secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the contact members, said contact members comprising inwardly directed angle irons secured to theV inside surface of the extension member adjacent the upper end thereof, adjustable screws supported by the angle irons.

5. In combination with a loom having a har'- ness frame, an electric stop motion comprising a stand disposed below the frame, extension members adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to said extension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the contact members, said signalling means including a bell.

6. In combination with a loom having a harness frame, anelectric stop motion comprising a stand disposed below the frame, extension members adjustably supported by the stand, contact members secured to said extension members, transverse rails connected to said extension members, means for supporting a contact bar on said rails, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact bar with the contact members, said signalling means including a light.

7. In combination with a loom having a harness frame, an electric stop motion comprising a stand disposed below the frame, at each end of the frame, extension members adjustably supported by said stands, contact members secured to said extension members adjacent the upper end thereof, transverse rails connected to said extension members, a pair of shafts vertically supported in said rails, a contact bar supported by said shafts, resilient means to retain said bar spaced above the extension members, an electric circuit having one end connected to the contact bar and the opposite end secured to the contact members, means installed in said circuit for emitting a signal when the circuit is closed by the engagement of the contact members by the contact bar.

JOHN R. SVANCAREK.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name vDate 822,585 Corbishley et al. June 5, 1906 1,434,274 Wharton et al Oct. 31, 1922 1,802,855 Whitehead Apr. 28, 1931 2,097,859 Holt Nov. 2, 1937