US2804097A

US2804097A - Picker stick bumper and bobbin deflector

Info

Publication number: US2804097A
Application number: US565150A
Authority: US
Inventors: Mccoin Jessie Beauford
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-02-13
Filing date: 1956-02-13
Publication date: 1957-08-27
Anticipated expiration: 1974-08-27

Description

Aug. 27, 1957 J. B. M com PICKER STICK BUMPER AND BOBBIN DEFLECTOR 2 Sheets-Sheet 1 Filed Feb. 13, 1956 INVENTOR. JBJJC'a l 72 A TTOR/VEY Aug. 27, 1957 J. B. MOCOIN 2,804,097

PICKER STICK BUMPER AND BOBBIN DEFLECTOR Filed Feb 13, 1956 2 Sheets-Sheet 2 INVENTOR PICKER STICK BUMPER AND BOBBIN DEFLECTOR Jessie Beauford McCoin, Lexington, N. C. Application February 13, 1956, Serial No. 565,150

7 Claims. (Cl. 139-166) This invention relates to an improved picker stick bumper and bobbin deflector for use in looms and has for one of its primary objects to provide a bumper which will very effectively withstand the wear to which it is subjected by the repeated beating action of the picker stick.

Another object of the invention is to provide a bumper which may be readily applied to or removed from a loom without completing removing any of the loom parts and which may be effectively secured in position in the loom.

A further object of the invention is to provide a bumper and deflector which is so constructed that it will correctly fit certain of the loom parts adjacent which it is disposed in a manner so that the bumper will not be subjected to twisting or bending forces or strains resulting from the impact of the picker stick and will therefore be less subject to wear and deterioration.

Still a further object of the invention is to provide a bumper provided with a long wall surface positioned to be engaged from end-to-end thereof by the picker stick and which is composed of edge portions of a plurality of laminations of which the bumper is formed so that said wall will most effectively withstand the pounding of the picker stick.

Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawings, illustrating a presently preferred embodiment thereof, and wherein:

Figure 1 is a fragmentary front elevational view of a portion of a loom, partly broken away, and showing the bumper in an applied position;

Figure 2 is a fragmentary rear elevational view,.with

certain of the loom parts removed, illustrating the mountnited' States Patent ing of the bumper, taken substantially along a plane as indicated by the line 22 of Figure 5;

Figure 3 is an enlarged fragmentary cross sectional view, taken substantially along a plane as indicated by the line 3-3 of'Figure 2;

. Figure 4; is an enlarged fragmentary cross sectional View, taken substantially along a plane as indicated by the line 4-4 ofFigure 2; V j

Figure 5 is an enlarged fragmentary longitudinal sectional view, taken substantially along a plane as indicated by the line 5-5 of Figure 2,- and j Figure 6 is an enlarged perspective View of the bumper shown removed from the loom.

Referring more specifically to the drawings, the bumper constituting the invention and as best illustrated in Figure his designated generally 8' and ispreferably composed of :a'pluifaiity of plies or laminations 9 of leather which are secured together in abutting engagement in anysuitable manner. The bumper 8 includes a rear face 10 and a front face 11. The lower portion of the bumper 8 has a lateral extension 12 which is disposed remote from a side wall 13 thereof. The other side wall 14 extends upwardly from the inner end of the top wall or surface 15 of said extension 12. The bottom surface of the bumper 8 includes a bottom wall portion 16 which constitutes the bottom wall of the extension 12 and an inclined bottom 2,85%,097 Patented Aug. 27, 1957 axis of the bumper 8, so that said walls are disposed at an acute angle to the top wall 15 and bottom wall 16 of the extension, for a purpose which will hereinafter become apparent. The upper portion of the front wall 11 is beveled to provide an inclined top wall 19 which slopes downwardly from the upper end of the rear wall 10 to the front wall 11 and which is disposed between the

side walls

13 and 14. Thus, said top wall 19 like the outer side wall 13 is composed of edge portions of the plies 9. The bumper 8 is shown composed of six plies 9 but a greater or lesser number may be employed.

In order to illustrate the application and function of the bumper 8, parts of a conventional loom have been illustrated and will be briefly described. These include portions of the loom lay 20 and the race plate 21, which plate is longitudinally slotted for accommodating the swinging movement of the picker stick, the upper portion of which is shown at 22. A guide 23 is disposed in front of and spaced from the lay 20 and combines therewith to form a slot 24 in which the picker stick 22 swings between its full line and dotted line positions of Figure 1 and by which said picker stick is guided. The outer end of the guide 23 is secured by a fastening 25 to the outer end of the lay 20 and the inner end thereof is joined integrally with the end portion 26 of the quill chute 27. Said quill chute 27 has a front face 28 which is inclined downwardly and forwardly in a direction away from the lay 20, as best seen in Figures 3 and 4. Said front face 28, remote from the reduced end portion 26 of the quill chute, extends upwardly to above the upper edge 29 of said portion 26 and is provided with an inclined edge 30 which extends upwardly from said upper edge 29 at an obtuse angle thereto. The upper portion of the front face 28, adjacent the edge 30, is provided with a slightly thickened portion 31, as seen in Figure 1.

As seen in Figure 2, the rear face 32 of the quill chute 27 is provided with'a projection 33 having an outwardly opening threaded socket 35 and lugs 34 which'project from the corners thereof. The rear face 32 is also provided with a top lug 36 and a bottom'lug 37, which lugs have substantially parallel adjacent faces which are disposed at substantially right angles to an adjacent inner edge 38 of the projection 33 and in offset relation thereto in a direction away from the projection 33. The

lugs

36 and 37 combine with the projection wall 38 to form a socket which opens into the adjacent end of the slot 24.

The bumper extension 12 is sizedto fit snugly in said socket with the wall 18 thereof abutting the projection wall 38, with the wall 15 abutting the underside of the lug 36, and with the bottomwall 16 resting on and abutting the upper side of the lug 37. The bumper 8 is thus detachably mounted on the rear face 32 of the quill chute 27. As seen in Figure 2, the lower portion of the inner bumper wall 14 engages a part of the lug 36. A substantial part of the front facell is disposed against a rear ,surface- 39 of the quill. chuteZT-Which is disposed in 12 between the lugs 36 and 37.and.against the wall 38, so that the upper portion of the inner side wall 14 will rest flush against the inclined edge 30, as seen in Figures 1 and 2. With the bumper 8 thus positioned, the outer side wall 13 thereof is disposed at a correct angle so that a portion of one longitudinal edge of the picker stick 22 will strike flush thereagainst, from end-to-end of said wall 13, as seen in broken lines-in Figures 1 and 2.

A bottom portion 40 of theiloom sword abuts against the outer or rear side 10 of theextensionlZ and a bolt 41 extends through said portion 40 and is threadedly anchored in the socket 35, so that the bolt 41 does not directly contact any part of the bumper8. The inner side of the sword 40 is recessed above its lower portion, as seen at 42 to receive andsupport a part of the lay 20. Thus, when the bolt 41 is tightened in the socket 35 the bumper 8 will be securely clamped between the rear surface 39 of the quill chute and portions of the sword 40 and lay 20.

From the foregoing it will be apparent that as the picker stick 22 oscillates between its full line and dotted line positions of Figure 1 while being actuated in a conventional manner by the check strap 43, that in moving from right to left toward its dotted line position of Figure 1, it will be swinging in the picker stick slot '24 toward the bumper 8, so as to strike the side wall 13 flush, as seen in broken lines in'Figures land 2. It will be apparent that this will not'tend-to twist the bumper 8 but rather will merely tend to displace the bumper from left to right of Figure 2 tightly into the

socket

36, 37, 38. The upper end portion of the bumper 8 will also be prevented from being twisted or deflected to the right, as seen in Figure 2, due to the fact that the inner side wall 14 abuts against the edge of the quill chute. Also, as previously mentioned, since the wall 13 is composed of edges of the bumper plies 9 it will most effectively withstand wear resulting from the impact of the picker stick therewith and the thrust on the bumper resulting from such impact will be in a direction coinciding with the planes of the plies 9, corresponding to the plane of maximum strength of the bumper. Thus, the bumper 8 is capable of withstanding a maximum amount of use without becoming ineffective due to wear and the wear to which the inner side of the lay 20 is subjected will not adversely'affect the life of the bumper 8 or the stability of its support in the loom, since the bumper is always securely clamped between the surface 39 and-the lower portion of the sword 40 and also by a portion of the lay 20 which is not engaged and'worn by the picker stick 22. It is not required to remove or detach any parts of the loom in order to remove and replace the bumper 8. This can be accomplished by merely loosening the bolt 41, after which the operator may grasp the bumper 8 from beneath the quill chute 27 and by moving the bumper from right to left as seen in Figure 2 can disengage it from between the

lugs

36 and 37, after which the bumper can be withdrawn downwardly from the loom. This procedure can be reversed for applying a new bumper, after which it is only necessary to tighten the bolt 41.

Frequently the raised surface '31 fails to accomplish its intended result of deflecting the stems of the quills, not shown, which are discharged downwardly over the front face 28, outwardly and away from the picker stick slot 24, and as a result the stern of a quill will hang up in the slot 24 and obstructthe swinging movement of the 6 picker stick 22. The top face orwall 19 of the bumper 8 overcomes this by deflecting the stems of the quills away from theslot 24 toeliminate this cause of .loom stoppage. Said top wall 19 is likewise formed of edge portions of the laminations or plies 9 to most effectively withstand the wear to which it is subjected by contact with the quills.

Various modifications and changes are contemplated and may obviously be resorted to, without departing from the spirit or scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. Incombination with a quill chute having a substantially upright rear surface located at an end of a picker stick slot of a loom, said quill chute having an upper lug, a lower lug and a projection extending outwardly from said rear surface; a picker stick bumper comprising a relatively thick body having a lower end provided with a lateral extension fitting against said upright rear surface of the quill chute between the upper and lower lugs, said lateral extension having an outer end bearing against the quill chute projection, said bumper having an outer side wall disposed remote from the extension thereof and extending into said end of the picker stick slot, said outer side wall being adapted to. receive the impact of the picker stick during swinging movement thereof toward the quill chute.

2. In a combination as defined by claim 1, wherein said bumper includes substantially parallel front and rear faces having portions constituting front and rear face portions of said lateral extension, said front face bearing against said upright rear surface and said rear face being adapted to be engaged by parts of the loom sword and lay for clamping the bumper between said parts and the quill chute.

3. In a combination as defined by claim 1, said quill chute having an inclined edge portion, and said bumper including an inner side wall extending upwardly from said extension and disposed substantially parallel to said outer side wall, said inner side wall abutting against said inclined edge portion of the quill chute.

4. In a combination as defined by claim 3, wherein said side walls are disposed at an incline such that the axis of the picker stick is disposed substantially parallel thereto when'the picker stick is in contact with the bumper and the inner side wall is abutting said inclined edge portion of the quill chute whereby a portion of the picker stick engages flush against said outer side wall from end-to-end of the outer side wall.

5. In a combination as defined by claim 1, wherein said bumper is composed of a plurality of plies having coplanar edge portions defining said outer side wall.

6. In a combination as defined by claim 1, wherein said quill chute is provided with a downwardly and forwardly inclined front face, and said bumper including a downwardly and forwardly inclined top wall disposed above the level of and substantially parallel to an upper portion of the front face of the quill chute.

7. In a combination as defined by claim 6, said bumper being composed of a plurality of plies having coplanar edge portions defining said outer side wall and other edge 7 portions defining said top wall.

References Cited in the file of this patent UNITED STATES PATENTS 972,944 Stone Oct. 18, 1910 1,450,726 Holbrook Apr. 3, 1923 2,023,187 Willingham Dec. 3, 1935