US1611570A

US1611570A - Machine for boring the bearings of crank cases

Info

Publication number: US1611570A
Application number: US716389A
Authority: US
Inventors: Albert H Wadell
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-05-28
Filing date: 1924-05-28
Publication date: 1926-12-21
Anticipated expiration: 1943-12-21

Description

Dec. 21 ,1926. 1,611,570

A. H. WADELL.

MACHINE FORBORING THE BEARINGS OF CRANK CASES Filed May 28 192 4 Sheets-$heet 1 IN VEN TOR.

7"", fwd; ATTO EYS.

A. H. WADELL MACHINE FOR BORING THE BEAR INGS 0E CRANK CASES Filed May 28, 1924 4 Sheets-Sheet 2 b Dec; 21 19 6; 1,611,570

IN VEN TOR.

BYW

- fwd ATTO EYS.

Dec. 21 1926.

A. H. WADELL Filed May 28 1924 MACHINE FOR BO RING THE BEARINGS 0F CRANK QASES 4 Shets-Sheet 5 IN V EN TOR.

I AT my EYS.

Dec. 21 .1926. .1 1,611,570

' A. H. WADELL v MACHINE FOR BORING 'IHE BEARINGS OF CRANK CASES Filed May 28, 1924 4 Sheets-Sheet. 4

I y I 1111111111 \1- k $1 ""mlm w H w) INVENTOR.

/ g M I,

A TO EYS.

' Patented Da ;21, 1926.

"UNITED STATES PATENT OFFICE.

ALBERT H. WADELL, NEWARK, NEW JERSEY.

Application filedMay as;

This invention relates to an improved portable machine for boring the bearings in crank cases of internal combustion engines and is adapted to simultaneously here all the manually operable mechanism.

The invention is furtherdesigned to,pro-

vide amachine of this kind which is quickly attached or detached from a crank case and in which the boring mechanism can be quick- ;ly aligned'so that the operation is economir. so

cal as it *can be quickly done. The inventlon comprlsing an adjustable supporting means'for the boring mechanism and a frame on, which all the parts are mounted, the' frame being readily attached and detached to and from the crank casing.

The invention is illustrated in the accompanymg drawings, in which Figure 1 is a side View of the improved machine mounted on the upper half of a crank case and Figure 2 is a view of the boring bar of the machine detached and with the cutters removed.

Figure 3 is a longitudinal section taken through Figure 1 and Figure 4 is a detail view of the preferred form of joint between the boring. bar and its screw-threaded exten sion. Figure 5 is a cross section on an en larged scale taken on line 55 in Figure .3. Figure 6 is a section taken on line 66 in Figure 3. Figure 7 is a section taken on line 7 7 in Figure 3 Figure 8 is an end view of the lower portion of the machine showing a part of the crank case in section and Figure 9 is a cross section on line 99 in Figure 7. Figure 10 is a longitudinal section on an enlarged scale of the boring bar and tool block therein. Figure 11 is a section on line 1111 in Figure 10, both Figures 10 and llshowing a calipering means which can beemployed in connection with the machine and Figures 12, 13, and 14 are views showing indicators for assisting in the align ment of the bearings which support the hering bar. I v

The machine is used 'on the crankcase of an internal combustion engine and .in the drawing I show the member-:10 of a crank case which has mounted thereon, the frame "formed of side rails or vslideways l1 and the end ieces 12. The frame is detachably secure in place byclamps and I showthe clamps 13 which are forked at the end to engage the upper edges of the rails 11 as at 14 in Figure 5 and to provide clearance at the center for the boring bar. The stem 15 1924. Serial no, 716,389.

of each clamp is shown secured by a nut 16" cylinder of the engine. bearings of the crank casevby means of a trated comprising a block 19 (see Figure 6) which is clamped up tight against bottom edge of its respective side rail by a screw 20 so that the block 19 and the jaw 21 on each side securely hold the slide in place. On the slide is a head 22 in which the stem 23 of the bearing 24 slides. The screw bolt 25 is actuated by a handle26 and'is held against longitudinal movement by the collar 27 between the flanges 28 and 29 of the screw bolt. The collar 27 is made in halves so that it can be inserted between the flanges and is held in place by the screws 30. The screw threaded part of the bolt 25 engages the nut 31 of the stem 23 and moves it up and down when the screw bolt is turned.

The bearings 24 are used in the desired number one for each bearing to be bored, and I show three in the illustration. I

The bearings support the boring bar 32, which is equipped with a suitable handle 33 and has the required number'of tools for finishing the inside of the bearings 34 of the crank case. For each hearing I provide a tool block 35 which is inserted in one of the slots 36 of the tool bar, the slot not being continuous in order. to give thebar the required strength but they are extensive enough to make the whole operative length of the bar available so that the tools can be set up to at least fourbearings.

The block 35 fits loosely in the bar 32 and is fastened in its adjusted position by the lock screws 37. The member 38 of the block 35 holds the toolor cutter 39 which is ad justed by the screw 40 which moves the foot 1 vtwo wings 44 pivoted to the post 45 and braced by the post 46 when shut and locked by a suitable look as the pivoted bolt 47 and v the nut 48.

In order to set the cutter I have devised a gauge 49 which fits under the bar 32 and is secured to one arm of a-caliper or micrometer as by a set screw 50 and the distance from the line 51 to the centre of its are, which is the centre of the bar, being port-intermediate its ends and then clamped others.

in place. The bearings 24 are then properly elevated .or depressed and when in place .canbe verified by an indicator such as the I one shown in Figure 12 in which the stem 53 fitting in the bearing 24 has the required size indicator 54 to turn in the bearing to gauge its position so as to line it.up with the able for different size crankcases. The indicator 55is another type which is rotatable to gauge the fit'all around. In Figure 14. I, show another form at 56 with a gauge 57 to show variations, if any, from the concentric position. VVheIr properly set by the han- .dles '26, the bearings 24 are fitted with the boring bar 32 and the respective cutters 39 adjusted. When these have been adjusted the members 44 of the nut are swung together and the handle 33 rotated and the boring bar and cutters .are advanced when rotated and the bearings are all bored at the same time and in alignment. The joint between the bar 32 and the extension 43 is preferably flexible as the threads on 43 are vfine and the stripping thereof isthereby avoided. I show the

pins

58 and 59 set at The indicators 54 are interchange crank cases comprising a frame formed of side rails and cross pieces, means for detachebly securing the frame to a crank case, a boring bar, bearings for the bar, and heads for the bearings said heads being adjustable longitudinally on the frame, and the bearings being adjustable vertically in the heads. A boring machine for the bearings of crank cases comprisinga franie with longitudinal slide-ways thereon, slides on the slideways, means for locking the slides, heads on the slides, bearings adjustable vertically in the heads, a boring bar insertible iongtudinally in the bearings, and means for advancing the bar when it is rotated 3. A boring machine for the bearings of crank cases comprising a frame consisting of side rails andend plates, clamp for securing the frame to theupper member of a crank case, slides movable on the side rails, means for clamping the slides in place, the

slides including heads, hearings in the heads, screw bolts for elevating and lowering the bearings, a boring .bar fitting in the bearings, cutters in the boring bar, and means for advancing the-boring. bar when it is rotated.

In testimony that I claim the foregoing, I have hereto set my hand, this 12th day of August, 192-3.

ALBERT WADELL