US2980357A

US2980357A - Guide for the engagement of stud carrying collars on a grooved shaft

Info

Publication number: US2980357A
Application number: US24059A
Authority: US
Inventors: Labrie Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-04-22
Filing date: 1960-04-22
Publication date: 1961-04-18
Anticipated expiration: 1978-04-18

Description

STUD CARRYING SHAFT 960 fiyen/ MM] 1 .I I R 2 2 7 7 B1 54/687 1 mm .m j Ii. C

UIDE FOR THE ENGAGEMENT OF COLLARS ON A GROOVED Aprii 18, 1961G and GUIDE FOR TI-E ENGAGEMENT OF STUD CAR- RYING 'CULLARS ON A GROOVED SHAFT Charles Labrie, 278 Cousineau St., Pont Viau, Quebec, Canada Filed Apr. 22, 1960, Ser. No. 24,059

6 Claims. or. 242-681) The present invention relates to guiding means for facilitating the insertion of stud carrying collars on a longitudinally grooved shaft.

For winding tape, such as adhesive tape and the like,

on cardboard rings, a winder is used which comprises essentially a rotary shaft provided with a longitudinal groove. The cardboard rings are inserted on said shaft with the interposition of metal spacer rings or collars I provided with an inwardly directed stud engaging the groove whereby said spacer rings serve to drive the cardboard rings for winding the tape thereon. 'When adhesive tape is wound, two winder shafts are used and the sheet of adhesive is first cut and the strips are alternatively wound on the cardboard rings of the two shafts in order to prevent sticking of the edges of the adjacent strips.

When the winding is comp eted, a tightening screw is unscrewed from one end of the shaft and the spacer collars and reels of tape are removed from the shaft and the col lars and new cardboard rings are reinserted on the shaft. However, each collar has to be rotated by hand to bring its stud into alignment with the longitudinal groove of the shaft in order to insert the collar on the shaft. This is a time consuming operation.

The main object of the present invention resides therefore in the provision of guiding means which will automatically align the studs of the collars with the longitudinal groove of the shaft and will therefore considerably facilitate and accelerate stringing of the collars and cardboard rings for the Winding operation.

Another important object of the present invention resides in the provision of a guide of the character described Which form an integral part of the Winding shaft.

Still another object of the present invention resides in the provision of a guide of the character described which is removably adapted at one end of the grooved shaft.

' Still another important object of. the present invention resides in the provision of guiding means of the character described which positively prevent blocking or jamming I of the stud carrying collars on the shaft during stringing.

The foregoing and other important objects of the present invention will become more apparent during the following disclosure and by referring to the drawings, in which:

Figure 1 is a front elevational view of a grooved shaft provided with the guiding means of the invention;

Figure 2 is a side elevation of the same shaft;

Figure 3 is a longitudinal section along line 3--3 of Figure l;

Figure 4 is a back elevation of the same shaft;

Figure 5 is an elevation of the complete shaft provided with the guiding means of the invention and showing an assembly of stud carrying collars and cardboard rings thereon;

Figure 6 is an end View of the shaft of Figure 1 Figure 7 is a cross-section along line 7 7 of Figure 2;

Patented Apr. 18, 1961 Figure 8 is a front elevation of a guide in accordance with the invention removably connected to a grooved shaft, partly broken away to show the threaded connection.

In the description and the accompanying drawings, the same reference characters indicate the same elements throughout. 7

Reference numeral 1 indicates a shaft provided with a longitudinally extending groove 2 having a bottom and

longitudinal sides

29 and 21. As previously explained, it is desired to string in a rapid and easy mannerthe spacer collars 3 made of metal and provided with an internally directed tooth or stud 4, such that the stud will engage the groove 2, for rotation of collar 3by shaft '1. The outer end portion 5 ofshaft .1 is of the same diameter as the bottom of-groove 2. The

sides

26 and 21 of groove 2 flare at the end of groove 2 adjacent end 5 of shaft 1 to define

inclined side portions

22 and 23 which extend spirally around the shaft tojoin at an apex 6 (see Figure 4) which lies on the line diametrically opposed to the longitudinal side 20 of groove 2. t

A raised lozenge shaped boss 7 is formed on the portion 5 of the shaft. The outer face of said lozenge is cylindrical and has the same diameter as shaftl; ,s'aid lozenge is elongated with its two opposed outer and inner apices 24 and 25respectively disposed along a longitudinal line aligned with the longitudinal side 20 of groove 2. Thus, the two inner

inclined sides

26 and 27 of the lozenge 7 are disposed adjacent but spaced from

inclined sides

22 and 23 of the groove such as to define therewith a As shown in Figure 5, the shaft 1 is provided at its end opposite end 5 with a gear wheel 8 and with abutting nut 9, screwed on the shaft.

In the use of-the invention, the shaft 1 is held vertically and cardboard rings 10 are strung alternatively with stud carrying metal collars 3. The stringing is effected at the Upon stringing of the collars 3, theirv stud 4 will pass between the apex 24 of the lozenge 7, and the apex 6 defined by

sides

22 and 23; from then" end 5 of shaft 1.

on, the stud will beguided by

sides

22 and 23 until the stud engages the straight part of groove 2.

The lozenge 7 is necessary because it maintains the full diameter of shaft 1 up to apices- 6 and 24, and thus prevent the collars 3 from becoming inclined and wedging onvthe shaft, in the case where the stud 4 would abut against apex 6.

Once all the collars 3 and cardboard rings 10 have been strung on the shaft, they are tightened one against the other by means of nut 11 engaging threads (not shown) made on the portion 5 of the shaft, outside of and adjacent lozenge 7. The shaft and assembled collars and rings may then be placed in driving position in the winder. V l The eccentric position of the inner apex 25 of lozenge 7 prevents the stud 4 from butting against said apex when the collars 3 are unstrung after the winding of the tape on cardboard rings 19.

In the modified form of the invention in accordance With'the present invention and sh own in Figure 8, the

. made'on shaft 12 adjacent nipple 13.; V V

Whiletpreferifed'embodiments in accordance with {the present invention havebeen illustrated and described, it

' isunderstood-thatvarious modifications may be resorted l-pended-claims v M a What I'claimisc In this base, the shaft 12 has a threaded nipple 13 cm gagingwith'a threaded socket made in the'guide 14 which 'forms a removable prolongation or extensionjof V shaft 12;. Theipar t 14'hasa groove 15 which is aligned with the "groove' ofj sliatti l' {not shown) and which cor- 7 .ing sides for 'groove'lS and a lozenge 17 corresponding to lozenge 7 of the first embodiment The outer end of "theggui'de 14 taperedasjshown at 16, to facilitate stringing of the dollars and'ring; Threads (not shown) correspond g to threads 11 ot the firstembodiment are to without-departing'fron the spirit and scope of the ap- 7 said groove, said lozenge shaped boss having an outer and an inner apex disposed along a line parallel to said longitudinal groove. V p

2. A guide as claimed in claim 1, wherein said lozenge shaped boss has its apices laterally ofiset from the center of said groove. p 1 V 1 3. A guide as-claimed in-claim 1, wherein the inclined side portions meet said longitudinal sides of saidtgroove at points unequally spaced from the adjacent inner apex of said lozenge shaped boss. V

4. A guide as claimedin'claim'lfwhereinthe apices V of said lozenge shaped'boss are aligned with the one lon- 1 Aguide for stringing stud carrying collars on a a longitudinally grooved shaftfcomprising a shaft section vhavingra longitudinal groove with a bottom and longitudinalsides, said sides flaring at one end'of said groove 'to form-inclined side'portions joining into a first apex at a point of the shaft. diametrically opposed to said gro0ve,z--the bottoin "of said groove defining a surface which/ extends between said inclined side portions, and

a lozen'gesh'aped boss onsaidsurface disposed between said inclined side portions andjdefining with saidinclined 7 sid'eirportions' and two'of its own sides, a bifurcation of a gitudinal side of said groove the meeting point, of which, With the associated inclined side' portion 'is the 'more distant from the adja'centjinner apex offsaid lozenge shaped boss. 7 1

5. A guide as claimed'in claim 1, wherein the outer apex of said lozenge shaped boss is: disposed in substantially' transverse alignment with said firstapex, v

6; A guide as claimed in claim 1, whereinrth e external surface of said lozenge shaped boss is curved on a diameter equal to the diameter of said shaft section.

References Cited in of this patent UNITED STATES :PAT ENT E S 12,290,403 Wyss 7 2,302,237 McFall Nov. 17, 1942 2,953,639 ce kap n; Sept. 20, 1960