USRE13493E - Harry hallam - Google Patents

Description

H HALLAM ABRADING DEVICE.

APPLICATION FILED NOV. 9, 1912.

Reissued Dec. 10; 1912.

, which the cover is wrapped, said body bevthey `eect the clamping UNTTED sTATEs PATENT oEEIoE. j

`HABBY HALLAM, 0F LEICESTEB, ENGLAND, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, 0F PATEBSON, NEW JERSEY, A CORPORATION OF'NEW JERSEY.

ABBADING DEVICE.

original No. 1,030,778, dated June 25,

` 1912.v Serial To all lwhom t ma concern:

Be it known t atI, HARRY HALLAM, aw subject of the King of England, residing at Leicester, Leicestershire, England, have invented new and useful Improvements in Abrading Devices, of which the following is a specification. y

This invention relates to builing or abrading devices and in particular to supports for removable covers having buiiing or abradin surfaces.

object of the invent-ion Vis to provide ,a simple and compact support for a buiing or abrading. cover which is so constructed and arranged that a new cover may be quickly and conveniently adjusted upon the support to take the place of the old one.

yA further object. of the inventionisto ro'vide simple and eflicient means for eifecting a clamping of'the -cover in adjusted po-y sition upon its support, said means belng preferab y arranged to aid also in effect-ing a )roper adjustment' of the cover.

ith the foregoing and other general objects in view, the invention is herein shown 1n its 'a plication to a small buiiing or abrading rol such as may conveniently be used inthe manufacture of boots and shoes for scouring the breasts of Louis or other heels. In the preferred embodiment of the in' Ventil-intheV cover support comprises a hollow, preferably cylindrical, body about ing rovided with a longitudinal slit extending from its eriphery to its hollow interior. Preferab y the body above referred to, which, in .the illustrated embodiment,'is shown as comprising a longitudinally slitted sleeve, is so constructed and arranged that movement kof the edges of the longitudinal slit out of a predetermined relation to each other develops a force tending to restore them to such predetermined relation, means being preferably provided for bringing said edges into a different relation to each other. In the ,preferred construction also the edges of the slit in one of their before-mentioned relations to each otherare so spaced as to receive readily between them the inturned ends of a buiiing or abrading cover and in the other kof said before-mentioned relations between them of said inturne'd endsrof said cover.

lbetween Specification of Beissued Letters Patent. Reissued Dec.`10,'1912. 1912, Serial No. 422,822. Application for reissue illetl November 9,

A construction in which the edge of the slit in the cover support have a tendency to remain 1n, or to return to, a predetermlned relation to each other may conveniently be provided by making the body about which the cover is wrapped of elast-ic material, or by providing elastic means which operates upon said body, or 'by a combination of both the lexpedients mentioned.

As indicated above, the cover is preferably continedfu on its support by having its inturned en s clamped between theedges of the longitudinal slit in' said support and in the preferred embodiment of the invention such clamping may conveniently be eil'ected by arelative, substantially circiunferential, movement of the edges of said slit from the open position in which they receive readily them the inturned ends of the cover to the closed position in which the said inturned ends are clamped by the edges. Such relative circumferential movement of the edges by causing an increase in the curvature of the sleeve by a contraction of its diameter tends to draw the cover tightly about the outer surface of the sleeve and to take up such looseness as it isadvisable to provide for convenience in slipping the cover over the sleeve.

The cover support is preferably mounted upon a carrier, shown in the illustrated embodiment as a rotating spindle by which movement is imparted to it andpin the preferred embodiment of .the invention the cover support is constructed and arranged 'for convenientl removal from its carrier,

whereby it may be readily brought into such position that a new cover may be quickly and 'conveniently adjusted upon it to take the place of the old one. Preferably the means for confining the support upon its carrier serves to effect one of the relative circumferential movements of the edges of the longitudinal slit in the support. The

means for confining-.the support upon its carrierhas preferably, in addition to the function just. referred to, also a cover confining function.

In the accompanying drawings. Figure 1.

is an elevation of a part. of a bning or abrading machine provided with one of the small rolls above mentioned; Fig. 2 is a longitudinal section on the line 2-2 of Fig.

3 through the roll shown in Fig. 1, this view representing the parts in full size; Fig.`3 is an enlarged section on the line 3`3 of Fig. 1 showing the cover clamped between theedges of the longitudinal slit in the roll; Fig. 4 is a section similar to Fig. 3, but

showing the edges spaced apart for the reof, the inturned edges ception of, or removal of the cover; Fig. 5 is a section similar to Fig. 3 of a roll provided with an internal sprino' for spreading apart the edges `of the sla; rig. e is a View similar to Fig. 4 of al roll provided with an internal spring and showing th'e relative positions of the cover, sleeve and spring-When the edges of the longitudinal slit are spaced apart for the reception of, or removal of, the cover; Fig. 7 is a perspective view of one end of the longitudinally slitted sleeve showing the enlarge ment of the slit at its end.

In Fig. 1 is shown a head 2 attached by a -bolt 4 to a standard or bracket 6 and supporting in suitable bearings a. rotatable shaft 8. The shaft 8 is provided atone end with a socket to receive the shank or stem 10 of the buffing or abrading roll 12. The shank or stem 10 is a part of the central support or spindle 11 of the roll 12. and this support or spindle, when attached to the shaft 8 by ascrew 14 passing through the shaft and through a hole in the shank or stem 10, constitutes a reduced extension of the shaft 8. end of the spindle 11 is a fixed colla-r or flange 16 preferably integral with the spindle, and at the other end which is screw threaded is a knurled cap or nut 18. i The fixed collar or flange 16 and the nut 18 are provided with coned recesses 20 and 22, re-

spectively, which form seatings for and sup' ,port the ends of a longitudinal sleeve 24 provided with a slit extending throughout its length. The'sleeve 24 constitutes a support for av buffing or abrading cover which may be a sheet of sandpaper or other suitable abrasive material and the linturned lips of the cover are adapted to be received between the edges of the longitudinal slitin the sleeve, as shown in Figs. 3, 4. 5 and 6. The cover 26 may be conveniently placed upon the support 24 b v unscrewing the nut 18 from the spindle. inserting the edges of the inturned ends within the slit in the sleeve' or support 24 and sliding the cover lengthwise. over the support. It will be noted by an inspection of Fig` 7 thatV the edges of the slit at the ends of the sleeve are curved back to permit the ready insertion of t-he edges of tbeinturned ends or lips of the cover.

When tbe cover has been placed in adjusted position upon the support the knurled cap or nut 18 isscrewed in on the spindle 1'1 causing the conical recesses 2O and 22 in the fiange 16 and .the nut- 18, respectively, to engage the ends of the sleeve 24. thereby the inturned causlng it to contract and grip ends or lips of the portions vterial not' too flexible is longitudinally slitted sleeve in the manner of the longitudinal slit, thus drawing the cover tightly on the surface of t-he sleeve. The ends of the sleeve 24 may be conveniently tapered to correspond with the coned of the flange 16 and the nut 18. This tapering serves to guide the ends of the sleeve more readily into the coned recesses and also facilitates placing a cover on the support.

It will be noted from an inspection of Figs. 3 and 4 that the bending of the sleeve 24 from the shape, shown in Fig. 4 -into the shape shown in Fig. 3 and the corresponding curving in of the cover 26 tends to tighten the cover somewhat upon theouter surface of the sleeve,- since the bending by increasing the curvature of the sleeve lengthens 'its outer surfaceV time shortens the inner surface ot the cover.

The sleeve shown in Figs'. 3 and 4 is made of cover between the edges f somewhat and at the same elastic material and is so constructed that s confined vby the flange edges of the slit will be held apart, as shown in F ig. 4.

In Figs. 5 and 6 is shown a modification of the construction shown in -Figs. 3 and 4. In this modification an internal spring 28 is when its ends are not 16 and the nut 18 the provided for expanding the sleeve 24, this spring being substantially crescenteshaped in cross-section. Inturned lips or fianges on the sleeve 24 tend to keep this spring 28 in proper position within the sleeve. It will be noted by an inspection of Fig. 6 that when the edges ot' the longitudinal slit in the sleeve are spread apart the ends of the spring do not extend into contact with the inturned lips upon the sleeve, this being due to the shortening of the outer surface of the spring by its expansion and the lengthening of the inner surface of the sleeve. In Fig, 5, which shows the edges of the slit in clamping relation, it will be noted that the ends of the spring extend nearly into contact with the inturned lips 30 and 32. v

It is obvious that the position with respect to each other in which the edges of the slit .are yieldingly held and the position with respect to each other into which said edges are moved by the action of members provided with conical surfaces upon the ends of the sleeve may both be varied without departing from the spirit of this invention.

It will be noted that in the illustrated embodiment of the. invention the dimensions of the roll are such that when a cov r of maplaced ylpon the hereinbefore described, by inserting the edges of the inturned lips in the end of the slit and sliding the cover longitudinally over the sleeve, if the slit be of a width substantially ltwice the thickness of the cover the inturned lips on the cover will be con#4 fined so that they cannot readily straighten back into line with the outer surface, will thus serve as hooks acting against the-edges ofthe slit and will therefore offer considerable resistance to circumferential displacement of the cover in either direction, even 1 when not clam ed between said edges. By

cutting back t e edges of the slit at the end into which the edges of the lips are introduced when the cover is to be placed upon the sleeve, ready introduction of the lips into a slit of a width substantially only twice the thickness of the cover is facilitated.

The resistance ofthe cover to circumferential dis lacement either-when clamped or when unc amped may be increased by permit-ting the lateral edges of the cover to extend somewhat into the coned recesses in the ,collar or `flange 16 and nut 18, as shown in than twice the thickness of the cover, nevertheless it will be obvious that the cover may Abe applied to the sleeve inother ways, as for example, by wrapping it `around the sleeve and introducing its inturned ends either together 'or in succession into the slit. A

' construction of this kind,'in which the inturned ends of the abrasive cover are clamped between the edges of a longitudr nal slit in a hollow cover support and in which the cover is placed upon the cover support by inserting the edges o f the iii-- y t-urned ends in the slit and sliding the'cover longitudinally over the support, has an advanta over constructions hitherto used,.in that t e formation of a humpin the cover at the point of clamping may be easily avoided.

' In the ing and appended claims the terms abradabrasive will be used for convenience of expression to descrbeany kind of grinding or polishing cover applicable to construct-ions of this kind. v p

'Having described my invention, what, I claim as new and desire tosecure byv Letters Patent of the United States is 1. An abradng device comprising, in combination, a spindle, a resilientsleeve surrounding said spindle and provided with a longitudinal slit, and means carried by said spindle and arranged to hold said sleeve in spaced relation to said spindle.

2. An abradingdevice comprising, in comof the sleeve but withl bination, an abrasive cover inturned at its ends, a longitudinally slitted sleeve of elastic material, the slit in said sleeve `being adapted to receive'bet-ween'its .edges the inturned ends of vsaid abrasive cover, and means for contracting said sleeve to cause said edges to clamp said inturned ends between them, said means being constructed and arranged to overlap and confine the lateral edges of said cover upon said sleeve.

, 3.,An abrading device comprising, in combination, an abrasive cover inturned vat its ends, a longitudinally slit-ted sleeve of elastic material, the slit in said sleeve being adapted to receive between its edges the inturned ends 'of said abrasive cover and being enlarged at one end to permit the ready inser? tion of the edges of said inturned ends, and means for contracting said sleeve to cause said edges to clamp said inturnedends between them.v

4. An abrading roll comprising, in combination, anabrasive cover having inturned lips at its ends, a spindle, a longitudinally slitted sleeve removably mounted upon said spindle and adapted to receive Within its s it the inturned lips of said cover, and means for confining said sleeve upon said spindle, com rising a collar rigid with said spindle. and aving a coned recess arranged to engage one end of said sleeve, and a inember `adjustable toward and from said collar upon said spindle and having a coned recess v arranged to engage the other end of said sleeve.

5. In an abrading devicethe combination with a hollow cover support provided with a` longitudinal. slit the width of which may be varied, of yielding means for holding the edges of said slit in a predetermined 105 relation to each other and positive means l fo'r bringing said edges into a different relation to each other, said edges when in one of the before-mentioned relations being 'spaced to receive readily between them thel 110 inturned ends of an abrasive cover and when in the other of said before-mentioned relations effecting a clamping between them of said inturned ends of said cover.

6. An abrasive roll having, in combina- 115 tion, an abra-sive cover, a substantially cylindrical support for said cover, said support being provided with a lo 'tudinal slit the edges of which are yieldingly held in a predetermined relation to each other, and 120 means for bringing said edges into a different relation.

7. An abrasive roll having, in combination, an'abrasive cover,and clamping means for grippingsaid cover in place, said clamp- 1 25 in means comprising a substantially cylindrical support for said cover, said support being provided with a longitudinal slit, and positive means for causing the diameter of said cylinder to decrease.

`iso y '8. A device for holding an abrasive'cover In testimony whereof I have signed my comprising a sheet of material of approxiname to this specification in the presence of mately the shape of a hollow cylinder, but two subscribing Witnesses. having its ends normally separated, and HARRY HALLAM.

5 means for crowding said ends toward each lVitnesses:

other to grip the ends of the cover between FREDERICK WILLIAM WORTH, them. v JOSHUA CooK.

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