US1819428A - Jaw - Google Patents

Description

Aug. 18, 1931. I la.V MANLE- 1,819,428

JAW

Filed oct. 15, 1926l Patented Aug. 18, 1931 UNITED STATES PATENT OFFICE ROBERT E. MANLEY, OF YORK, PENNSYLVANIA, ASSIGNOR TO MANLEY llIANUFAC- TURING COMPANY, F YORK, PENNSYLVANIA, VA CORPORATION 0F DELAWARE Application filed October 15, 1926. SeralNo. 141,847.

This invention relates to tire changers and has for its principal object the provision of a simple and efficient jaw therefor. In most of ordinary tire changers the jaw is a simple block to which attachments are fitted to grip the rim and in others the jaw carries a hook which while affording a very firm grip is objectionable in that it tends to twist the rim under certain circumstances. The aw of the 1o present invention affords a very smooth action and carries as an auxiliary member a bracket to prevent the rising of the rim.

In the drawings Figure 1 is a side elevation.

Figure 2 is a front elevation.

Figure 3 is a section taken on line 3 3 of Figure 2.

Figure 4 is a section taken on line 4 4 of Figure 1.

Figure 1.

The body of the aw consists of two integral sections, one the standard 10 and the other the base 11. The latter at its bottom has two integral square blocks or protuberances 12 to which the retaining plate 14 is secured and at its outward extremity carries a vertically disposed abutment 15, preferably having a median rib 16 affording considerably increased strength. At the opposite or inner end of the jaw there are two parallel eXtensions 17 somewhat loosely receiving between them a link 18 held in place by a rivet or preferably as shown, by means of a cap screw which has a threaded engagement with the lower extension or shelf 17, affording a very convenient and quick means of disassembling, as with the screw or pin removed the jaw is preferably free to be slid outwardly along the steel guides 20 toward the left as seen in Figure 1, the guides 2O being parallel and fast to the side walls of a deep groove in the cast arm 21.

At the upper portion of the generally rectangular standard 10 is a cylindrical post 22 preferably integral with the standard. At its upper portion the post is perforated to receive a rod 24 having a downturned handle end 25 and a horizontal portion 26 forming a rest. This rod 24 serves to pin to the post Figure 5 is a section taken on line 5-5 of 22 the cap 30, which has a socket 31 to receive the post fairly snugly, and to support a rim. Y Projecting rearwardly from the walls of the socket are two parallel ledges 32, the tops of which are alined with or just a trieff" below Vthe top of the rest 26 sovthat a rim supi ported by the rest will be guided onto the upper edges of the two similar ledges 32 and be received within the notch 34 between the ledges and the guide 35, the latter being strengthened with the usual triangular rib 36 rising from the top of the cap.

The split collar 40 may be secured in adjusted position on the shaft by means of a bolt 41 passing thru the two lugs 42 of the collar jos and carrying the usual nut 44 which may be a hand nut but is preferably an ordinary wrench nut. The integral bracket 46 serves to overlie. a rim and prevent it from rising when pulled inwardly by contact with the abutments 15 of theI jaws, which are almostl invariably three in number and mounted in arms 21 set at 120o apart. The bracket 46 is quite heavy and is often referred to as the hammering pad and it is intended that this .'75 member when loose on the post shall be adapted tobe struck with a hammer in case, for example, the rim is rusty. The downturned flange 47 is optional but is quite convenient at times, serving to equalize the pressure on the two sides of the rim which is being collapsed.

VVhat I claim is 1. In a device for assembly with a j aw, a cap having a socket therein to receive a por- .'85 tion of the jaw, a pin for fastening the cap to the jaw and for supporting a rim.

2. The device of claim 1 in which the cap has an outwardly and upwardly extending guide forming with the pin a notch to receive the edge of a rim.

3. A cap for a tire changing j aw having a socket to receive a portion of the jaw, a plurality of parallel ledges, a guide Vextending angularly from the cap to form with said ledges a notch, said cap having a hole centrally therethru, the upper margin of the hole being substantially on a line with the top of the ledges whereby to receive a rim supporting rest to guide the rim into said notch.

4. A t-ire changing device consisting of a body having a ledge, a guide angularly disposed with relation thereto so as to form With the ledge a rim receiving notch, and a remov- 5 able member for guiding the rim into the notch.

5. A tire changing device consisting of a body having a pair of parallel ledges, a guide angularly disposed With relation thereto so as 10 to form with the ledges a rim receiving notch, and a removable member for guiding the rim into the notch.

6. The device of claim 5 in Which the remov-` able member is located between the ledges 15 and its upper surface is substantially alined with the upper surfaces of the ledges.

7 A tire changing device consisting of a body having a ledge, an angular guide disposed With relation thereto so as to form with zmsaid ledge a rim receiving notch, a reenforcing rib for said guide and a removable member for guiding the rim into the notch.

8. A cap for a tire changing jaW having means for positioning the same on the jaw,

2:51a rim receiving surface, an angular guide extending above said surface adapted to form means for retaining the rim in place, and means for retaining'said cap upon the avv.

In testimony whereof I aiiiX my signature.

3m ROBERT E. MANLEY.

Images