US1158220A - Top-roll saddle mechanism. - Google Patents

Description

Ru 1 9 1 6 2 b G 0 d PLANOQRAPH CO.,WASHINUTUN. n. c.

COLUMBIA LEWIS T. HOUGHTON, OF WORCESTER, MASSACHUSETTS.

TOP-ROLL SADDLE MECHANISM.

Specification of Letters Patent.

Patented Got. 26, 1915.

Application filed June 21, 1912. Serial No. 704,989.

To all whom it may concern:

Be it known that I, LEWIS T. HOUGHTON, a citizen of the United States, residing at Worcester, county of lVorcester, State of Massachusetts, have invented an Improve- 'ment in TopRoll Saddle Mechanism, 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 top roll saddle mechanism and especially to the fulcrum member or so-called lever screw on which the weighted lever is fulcrumed.

One of the objects of the invention is to provide a novel lever screw which is so constructed as to eliminate all danger of the weighted lever binding or wedging in the eye thereof, and further to provide a novel construction of lever screw which will not lose its adjustment in the roller beam by virtue of any vibrating or jarring move ment to which the machine may be subjected while in use.

Other objects of my invention are to improve lever screws of this nature, all as will be more fully hereinafter described and then pointed out In the appended claims.

Referring to the drawings wherein I have shown some embodiments of my invention, Figure 1 is a sectional view through a series of top rolls and through the roller beam showing my improved mechanism in side elevation; Fig. 2 is an enlarged section taken on substantially the line 0000, Fig. 3; Fig. 3 is a side view of Fig. 2 with a part broken out; Fig. 4 is a View similar to Fig. 2 but showing a different form of the invention; Fig. 5 is a side view of the device shown in Fig. 4; Fig. 6 is a view of the eye member of the lever screw; Fig. 7 is a side view of the screw member of the lever screw.

In the device shown in Fig. 1 the top rolls are shown at 1 and the bottom rolls at 2, the top rolls having a saddle resting thereon which is shown generally at 8, and this saddle has a stirrup i hung therefrom, the lower end of which is connected to the weighted lever 5 which is fulcrumed at one end in the lever screw or fulcrum member and at the other end carries the weight 6. The top-roll saddle mechanism, stirrup and weighted lever may have any suitable or usual construction and as they form no part of my present invention and as the method of operation of these parts is well known I do not deem it necessary to further describe them herein. I might add, however, that the top roll saddle herein shown is similar in construction to that shown in my co-pending application Se. No. 655,687, filed October 20, 1911. The invention, however, is not limited to use in connection with the top roll saddle shown, but is adapted for use in conncction with the weighted lever of any top roll saddle.

Some lever screws that are now commonly used are provided at their upper end with an eye through which the end of the weighted lever is inserted and are also provided with a shank which is screw-threaded into the roller beam 6. Another type of lever screw which is more or less commonly used is that known to the trade as the Speakman screw and which is embodied in the Speakman Patent No. 316,197. This Speakman type of lever screw comprises an adjustable member which is screw-threaded into the roller beam and to which the eye member is swiveled, said eye member having a shank which extends axially through the screw-threaded member and is mounted to turn therein, said shank having a head at its lower end to prevent it from being withdrawn from the screw-threaded member. My invention is adapted for use with either of the above types of lever screws. In the drawings, however, I have shown it as it would be applied to a Speakman screw.

In making a lever screw the eye thereof is usually formed by bending the wire from which the screw is made into oval shape to make an eye which is round at the top, and the weighted lever is usually provided with a notch in its end which rests against the top of the eye. This notch is generally provided with a fiat upper face which presents corners at eachside that cut and wear out the upper end of the eye, and when this occurs more or less friction develops at this point so that the weighted lever is apt to wedge or bind in the eye.

In the manufacture of yarns it is important that each top roll saddle should have the same weight applied thereto and it is also important that the amount of weight which is applied to the top roll saddle should be capable of easy determination. If the weighted lever has a free fulcruming' action on the lever screw, then the amount of weight which is carried by the top roll saddle could be easily computed by aster taining the amount of the weight itself and the relative lengths of the lever arms of the Weighted lever. If, however, the weighted lever binds or wedges in the eye of the lever screw, then a considerable amount of the weight on the lever is absorbed in the binding action and is not, therefore, transmitted to the top roll saddle. The importance, therefore, of a lever screw which will not wedge or bind on the weighted lever is ap parent. In order to secure this end I propose to construct the weighted lever and the eye of the lever screw so that the surfaces thereof which have engagement with each other conform to each other both in a direction longitudinally of the weighted lever and transversely thereof, thus avoiding the occurrence of any sharp corners on either part which will cause a wedging action in the eye of the lever screw.

Referring to Figs. 4: and 5 which show a lever screw of the Speakman type embodying my invention 7 designates the screwthreaded thimble which is screwed into the roller beam 6 and 8 is the eye member of the lever screw which is provided with the eye'9 in which the notch 12 of the weighted lever 5 is entered. This eye member 8 is formed from a piece of wire which is bent at one end to form the eye 9 and the other end constitutes a shank 10 which extends through the thimble 7 and is provided at its lower end with a head 11. The eye member 8 is, therefore, swiveled in the thimble 7 so that the lever screw can be adjusted vertically in the roller beam 6 by simply turning the thimble 7 and without turning the eye member 8 about its axis. Where the eye 9 has the oval shape shown in Fig. 4 I make the lever 5 of such a shape that the surface thereof which has contact with the eye 8 is shaped to fit the eye both in a direction longitudinally and transversely of the lever. The lever 5 is shown as having the usual notch 12 in its upper surface into which the upper portion of the eye 8 rests, and the sides of this'notch are beveled or rounded, as shown at 13 so that when the lever is in engagement with the eye the surface 12, 13

of the lever fits the rounded shape of the eye 8. The eye 8 is usually formed from a piece of wire which is circular in cross section and the notch 12 is provided with the rounded bottom which conforms in general to the circular shape of the wire. IVith this construction the surfaces of the lever screw and of the lever which have contact with each 1 other conform to each other both in a direction transversely and longitudinally of the lever, and the lever will, therefore, have a free rocking engagement on the lever eye.

In Figs. 2 and 3 I have shown another embodiment of the invention wherein the upper end of the eye 9 is square, that is, the

eye is made by bending a piece of wire to form sharp corners 14 at the upper side thereof so that the top 15 of the eye is practically straight. with this embodiment of the invention it is not necessary to round or bevel off the corners of the lever as is done at 13 in Fig. 5 because the top of the lever eye is straight and, therefore, will [it the straight surface of the notch in the lever The notch 12 has a rounded bottom, however, which conforms to the cylindrical shape of the portion 15 of the eye member, and with this construction, therefore, there will be no corners on the lever which will cut into or become wedged in the lever eye.

The constant jar and vibration to which spinning machines are subjected frequently results in gradually loosening the screwthreaded thimble 7 in a Speakman screw, and this gradual unscrewing action of said member will change the position of the lever 5. In order to prevent this from happening I propose to so construct the thimble and the shank of the eye member that they will have suflicient frictional engagement with each other to prevent the thimble from gradually becoming unscrewed in the roller beam. I accomplish this herein by making the thimble 7 slightly beveled or inclined at its lower end, as shown at 16, and by making the head 11 with the upper beveled surface 17 which fits the inclined surface 16. These surfaces 16 and 17 constitute cam surfaces, and when the thimble is turned on the shank 11 there will be a wedging action between the surfaces 16 and 17 which will be suflicient to resist any tendency of the thimble 7 to turn in the roller beam due to the vibration of the machine. These inclined surfaces, however, are not such as to prevent the thimble 7 from being turned on the shank 6 if a wrench is applied to the hexagonal portion 18 of the thimble. The wedging action, however, is suliicient to prevent the thimble from working loose in the roller beam as the machine is in operation.

lVhile I have shown herein some embodiments of my invention I do not wish to be limited to the constructional details shown.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is 2- 1. In a top roll saddle mechanism, the combination with a top roll, of a weighted lever hung therefrom, and a lever screw on which said lever is fulcrumed, said lever screw being formed of wire bent to present a lever-receiving eye having at its upper end a straight wear-resisting fulcrum portion of greater density and hardness than the body of the eye member and on which the lever fulcrums.

2. In the top roll saddle mechanism, the combination with a top roll saddle, of'a weighted lever hung therefrom, a lever screw on which said lever is fulcrumed, said lever screw comprising a thimble screwthreaded into the roller beam, and an eye member having a shank swiveled in the thimble and provided with a head at its lower end, said head and the lower end of the thimble having inclined surfaces which engage each other whereby the thimble is frictionally held from being turned in the roller beam due to jar or vibration of the machine.

3. As an article of manufacture a lever screw for top roll saddle mechanism comprising an eXteriorly screw-threaded thimble and an eye member constituting a fulcrum for the weighted lever, said eye memher having a shank swiveled in said thimble and provided with a head at its lower end, said head and the lower end of the thimble having cooperating beveled surfaces.

L. In a top roll saddle mechanism, the combination with a top roll saddle, of a weighted lever therefor, a lever screw on which the weighted lever is fulcrumed,

when the lever is weighted to provide sulficient frictional engagement between the shank and thimble to prevent the thimble from becoming loosened in the roller beam due to iar or vibration of the machine when in use while permitting the shank to turn freely when the weight is removed from the lever.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LEl/VIS T. HOUGHTON.

Witnesses:

HENRY F. HARRIS, EDITH P. KILBURN.

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

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