US1444415A

US1444415A - Eccentricity-preventing means for warpers

Info

Publication number: US1444415A
Application number: US206434A
Authority: US
Inventors: Howard D Colman
Original assignee: Barber Colman Co
Current assignee: Barber Colman Co
Priority date: 1917-12-10
Filing date: 1917-12-10
Publication date: 1923-02-06
Anticipated expiration: 1940-02-06

Description

Feb. 6, 1923.

H., D. COLMA N. ECCENTRIGITY PREVENTING MEANS FOR WARPERS.

ORIGINAL FILED DEC.10,I91T- Patented Feb. 6, i923.

ill

TO BAEBEB-OOLMAN oonirnivr, rnmnois.

OF ROUKIEORID, ILLINOIS, A CORPORATION 0h EC(IBETTER/1ECITY-PREVENTING DEEANS F013.-

Application filed December To all whom it may concern:

itknown that l, Howe in D. C LMAZQ, a citizen of the United States, residing: at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Eccentricity- Preventing Means for Warpers, of which the following is a specification.

This invention relates more particularly tov wapers otthe type in which the warp beam is supported. and rotated through peripheral contact or" the yarn mass on the warp beam with the periphery of a driving drum, the beam being held on the drum by means of two arms pivoted to the warper framework and engaging the trunnions oi the beam. The common method of pressing the beam against the drum in order to obtain proper density of the yarn mass is to hang weights upon the before-mentioned arms to supplement the weight or" the beam. Usually no means is provided to prevent the yarn mass from becoming eccentric, the weights above referred to being inefiective for this purpose. If the warper is to be operated at high speed, it is essential that the yarn mass be prevented from becoming eccentric, as otherwise the bounding oi the beam will cause destructive vibration.

The object of this invention is to provide simple and effective means for preventing the yarn mass from becoming eccentric and to make said means self-contained so that it may be readily applied to existing warpers.

In the accompanying drawings, Figure 1 is a fragmental side elevation of a warper showing the application thereto of a device embodying the features of my invention. Fig. 2 is a front elevation of said device and Fig. 3 is a side elevation thereof. Fig. 4; is a detail view of a swinging bracket comprised in the device.

In Fig. 1 is shown a portion of a war-per of ordinary construction, A being a rotatory drum for supporting anddriving the section beam B.

The. trunnions C 0t the beam B are engaged by the hooked ends of two arms D which are pivoted to the framework of the warper at E. Only one of these arms is shown in the drawings. The means for preventing eccentricity of the yarn mass comprises two devices each connected with one of the arms Since these devices are of 1917, ,erial NOfFmGAS l. Renewed April. 1.3. 1921. Serial No. 4.611%.

the same construction only one is iliustrated in the present drawings. The device comtwo interengaging parts and means ;..3r restraining rotation of one of said parts. in the embodiment selected for illustration, the interenge ping parts consist of a rack and a pinion, the rack being detachably connected to the arm D, and the pinion being mounted in a body which is detachahly connected to astationary part, as, for example, the floor.

The body 1 is connected to the floor at a point forward of the warper and in the plane in which the arm D swings. Preferably the body is detachably mounted; herein it shown as provided at its lower end with oppositely extending studs 2 adapted to lie within hooks 3, said hooks having flanges l which are secured to the floor b means of bolts 5. in the upper end of the body is rotatably mounted shaft 6 011 which is lined a pinion 7. 8 is a rack bar connected its upper end to the arm I), said rack bar meshing with the pinion T. .l.vo rollers 9 (F 3) are mounted in the upper end of the body 1 in position guide the rack bar 8 and support it against the thrust oi the pinion. Adjacent to the pinion 7 the rack bar fits slidably between the guide Sill'iiflCQS 10 on the body 1.

To the upper end of the rack 8 is rigidly lined a yoke 11, the space 12 of which is adapted to receive a hook or curved in F on the arm D. A.- head 18 is mounted in the yoke 11 for sliding movement longitudinally of the yoke. Said head is secured to a stem it having a handle 15. An expansion spring 16 is interposed between the head 13 and the closed end of the yoke 11. Normally the hook F holds the head 13 against the stop shoulders 17 on the yoke.

The yarn-controlled means for preventing rotation of the pinion comprises a spur gear wheel 18 fixed to the shaft 6 and mesh ing with apinion' 19, said pinion being fixed upon a shaft 20 that is rotatably mounted in a bearing 21 upon a bracket 22.

The bracket is mounted to swing upon the axis of the shaft 6 by i'neans oi a bearing 23 surrounding said shaft. Rigid with the pinion 19 is a brake disk 2% arranged for peripheral contact with a brake shoe 25 attached to a bar 26 which is fixed to the body 1. A tension spring 27 is adjustably connected at one end to the body 1 and i.

attached at its other end to the bracket 22, said spring acting to press the brake disk 24: against the shoe 25 at all times except when the operative separates the disk from the shoe by moving the bracket 22 by means of a handle 28 on the bracket. 29 is lug on said bracket arranged to stop against a por tion of the body 1 to limit movement of the bracket 22 by the operative. The brake disk 24: is provided with a crank handle 30.

The friction between the brake disk 24:

and the shoe 25 is such that the pinion 7' is prevented from turning except as required by increase in diameter of the yarn mass. As the beam fills, the pull exerted upon the rack bar 8 is sufiic-ient to cause the spur-gear wheel 18, acting through the pinion 19, to move the bracket 22 against the tension of the spring 27, the extent of movement of the bracket being only enough to relieve the friction between the brake disk and the shoe sufliciently so as to allow the disk to turn through a. short are. Such turning of the disk allows the rack bar 8 to rise a minute fraction of an inch. Further increase in the diameter of the yarn mass causes repetition of the action just described. When the beam. is true and rotating rapidly, the turning movements of the brake disk merge into continuous rotary motion. The inertia of the parts offers so much resistance to sudden upward movement of the arm D that if the rapidly revolving yarn mass were slightly eccentric the beam would I-be unable to rise when the high point of the yarn mass passed between the axes of the beam and the drum A, thus causing the high point of the yarn mass to: be rolled down.

When the beam is to be removed from the warper, the operative raises the bracket 22 by means of the handle 28 until the stop 29 is in contact with the framework, thus keeping the brake disk away from the brake shoe. While thus holding the brake disk away from the shoe, the handle 15 may be used to lift the rack bar 8 suliiciently to disconnect the eccentricity-preventing device from the hook F.

When an empty beam has been substituted for the full beam, the crank handle 30 may be used in rotating the brake disk-and the connected gears to lower the rack bar 8 until the yoke 11 has been engaged with the hook F and a suitable degree of pressure placed on the beam, the bracket 22 being held up by means of the handle 28 while the brake disk is being thus rotated.

The reason for providing a spring-pressed head 13 is this: Suppose an eccentric beam be placed in the warper with the high point of the beam between the axis of the beam and the driving drum A, the crank handle 30 being rotated to lower the rack bar until the head 13 is against the stop shoulders 1'7. When the warper is set in operation the readily applied to existing warpers, the yoke 11 being adapted to engage the hook F commonly provided for the suspension of weights. V y

The invention is not limited to thecon struction and arrangement herein shown, as

various changes vmay be made within the scope of the appended claims.

it will be seen that the body 1, the rack bar 8 and the pinion 7 constitute an extensible device, and that the brake 24-25 resists elongation of said device. 7

claim as my invention: 7

l. A device of the class described having, in combination, an elongated body, attach ing means at one end of the body, a pinion rotatably mounted upon the body near the other end thereof, a rack bar meshing with the pinion and guided for movement longitudinally of the body, attaching means the end the rack bar which is remote from the first-mentioned end of the body, and means on the body for restraining rotation of the pinion.

2. A device of the class described having, in combination, an elongated body, attaching means at one end of-the body, an element rotatably mounted upon the body near the other end thereof, an element engaging the first mentioned element and vguided for movement longitudinally of the body, such movement causing rotation of the firstmentioned element, attaching means at the end of the second mentioned element which is remote from the first mentioned end of the body, and means on the'body for restraining rotation of the first mentioned element,

8. A device of the class described having, in combination, a body, a pinion rotatably mounted on the body, a rack meshing with the pinion, a spur gear wheel rigid with the pinion, a bracket pivoted on the axis of the spur gear wheel, a pinion rotatably, supported by the bracket and meshing with the spur gear wheels, a brake disk connected to the last mentionedpinion, a brake shoe rigidly mounted on the body and arranged to be engaged by the brake disk, and a spring acting on the bracket to press the brake disk against the brake shoe;

4. A self-contained device of the class described having, in combination, a rack and a pinion meshing with each other, means for detachably connecting the device to a warper, said means including attaching means connected to the rack and attaching means connected to the pinion, said two attaching means being at OPPOSltG ends of the device, and means for restraining rota tion of the pinion.

5. A. warper having, in combination, a framework, a driving drum mounted in the framework, an arm pivoted to the framework for supporting a beam upon the drum, an extensible device connecting said arm to a stationary part, as the floor, and a triction brake resisting elongation of said device.

6. A War-per having, in combination, a beam-supporting arm, a rack and a pinion meshing with each other, one of said gear elements being connected to the arm and the other gear element being connected to a stationary part, and yarn-controlled means for preventing rotation of the pinion.

7. A warper having, in combination, a framework, a beam-supporting arm pivoted to the framework, a rack and apinion meshing with each other, one or" said gear ele ments being connected to the arm, a structure supporting the other gear element and having means to detachably engage stationary part, as the floor, and a brake resisting rotation of the pinion, said brake being carried by said structure.

8. A warper having, in combination, a framework, a driving drum rotatably mounted in the framework, an arm pivoted to the framework and arranged to support a beam upon the drum, and a self-contained eccentricity-preventing device connected at its lower end to a stationary part and pivotally connected at its upper end to said arm.

9. A device of the class described having, in combination, a body, a pinion rotatably mounted in the body, a rack meshing with the pinion, attaching means on the rack, attaching means on the body, said two attaching means being at opposite ends oi the device, and means on the body for 2GF5ii1tlil ing rotation of pinion.

10. it, warper having, in combination, a framework, a driving drum mounted in the framework, an arm pivoted to the framework supporting a beam upon the drum, said m having a hook at its free end, and a self-contained eccentricitypreventing device pivoted to the floor in front of the framework and having an opening to receive said hook.

A warper having, in combination, a beam-supporting arm, an extensible vice one end of which is connected to a stationary part and the other end of which has an opening, a spring-pressed head slidably mounted in said opening and adapted to bear against the beam-supporting arm, and means for resisting elongation of said device.

12. A warper having, in combination, a beam-supporting arm, an extensible device one end of which is connected to a station ary part, a spring-pressed head movably connected to the other end of Said device and adapted to bear against the beam-supporting arm, means for resisting elongation of said device.

13. A warper having, in combination, a framework, a driving drum rotatably mounted in the framework, an arm pivoted to the framework and arranged to support a beam upon the drum, and an eccentricity-preven ing device connected at its lower end to a stationary part and yieldingly connected at its upper end to said arm.

14. In eccentricity-preventing means for warpers, a slidably mounted head, a stem attached to the head, a handle connected to the stem for moving the head in one direction, and a spring acting to move the head in the opposite direction.

In testimony whereof, I have hereunto Set my hand.

HOWARD D. COLMAN.