US1442536A - Bolting machine - Google Patents

Description

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' J` J. OLHSSO ET A1...

BoLTlNG MACHINE. FILED JAN. 18. 1921. 2 SHEETS-SHEET 1 IN V EN TORS. e Jui' /fasso., //Toss., JH. Pos.

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Patented Jan. 16, 1923.

UNITED STATES JOHN J". OLHASSO, HENRY F. GOSS, ND JOSEPH -I-I. POS, OF PORTLAND, OREGON,

ASSIGNORS TO INTERNATIONAL BOLTING VTOOL CORPORATION, A. CORPORA- Tron or OREGON.

BOLTING MACHINE.

Application filed January 18, 1921. Serial No. 438,092.

To all whom t may concern:

Be it known that we, JOHN GLHAsso and HENRY F. Goss, both citizens of the United States, and JOSEPH H. Pos, a subject of the Dominion of Canada, and all three residents of Portland, in the county of Multnomah and State of Oregon, have invented a new and useful Bolting Machine, of which the following is a specification.

Our invention relates to improvements in bolting machines, in which bolts, nuts, lag screws and such like machine elements are tightened by means of a socket wrench driven by a small motor and interposed planetary gears.

Preliminary to the rivetingof steel ship hulls, boilers, tanks, bridges, buildings, and similar structures, the members comprising said structures must be bolted together with a large number of bolts. So far the only practical method known has been to tighten these bolts by hand with a wrench or spanner.

The purposes of our invention are to produce a tool which is comparatively simple to construct; which can be handled by one man; which is adapted to be used with any standard make of electric, hydraulic or air motor; and which doesl the work more speedily, economically and efficiently than any other device known at present.

Measured in ratio of performance, our tool produces a more satisfactory result at less than one-tenth of the cost of the old method.

l/Ve attain these objects with the mechanism illustrated in the accompanying drawings, in which- Fig. I is a plan view of the entire apparatus with part ofthe handle broken away.

Fig. II is a side view of Fig. I.

Fig. III is a section through Fig. I along the line AA.

Fig. IV is a plan view with the cover removed` as indicated by the line B-B in Fig. II.

Fig. V show-s the spindle detached.

Figs. VI and VII illustrate alternate ar rangements of the planetary pinions.-

Similar numerals refer to similar parts throughout 'the several views.

In the cylindrical housing 1, having a projecting hub 2 is revolubly mounte a working head 3. Pressed into the flange 4c of the working head are the pivots 5, and mounted for free rotation on the pivots are the planetary pinions 6. These' pinions mesh with an internal gear 7, the latter being firmly secured against rotation in the wall of the housing 1 by one or more set screws 8. With this arrangement it will be obvious that a revolution of the pinions in the direction of the arrows 9 in Fig. IV will propel the pinions themselves bodily in the direction of the arrows 10, and thus cause the working head to revolve at a slow speed dependent upon the ratio between the teeth on the pinions and the teeth on the internal gear.

Rotation of the planetary pinions is effected by a central gear 1l forming a part of the spindle 12. At one side of the central gear the spindle rests in a socket 13 in the working head; at the other side the cover 14 furnishes the support. The shank of the spindle is slightly tapered and Hattened at the free end to form a firm connection with the axis of a suitable motor 15 (Fig. II). A collar 16 on the spindle between gear and cover reduces wear at this place to a minimum.

The cover is secured to the housing by means o-f the cap screws 17, a suliiciency of metal 18 being allowed in the wall of the housing where the screw holes enter.

A handle 19 inserted in a socket 2O in the cover gives the operator greater leverage to prevent the housing from turning. The cap screw 21 holds the handle in place.

To enable the use of various sized motors, the outer wall of the socket 20 is properly fashioned to furnish a guideway on which the slotted leg 22 of an angle may be slidably supported. The cap screw 21 holds this leg in proper adjustment. The other leg 23 with its thumb screws 24, engages a slotted extension leg 25, and in the hole 26, at the end of the extension leg, the motor is held.

Only one planetary pinion is actually needed to cause a rotation of the working head, but two pinions disposed opposite each other are preferred to equalize the thrust and to reduce the unit stresses in the teeth. Where a further reduction of unit stresses is desired, three gears, as shown in Fig. VII, or four gears as shown in Fig. VI, may be employed to good advantage.

The socket wrench 27 has a square shank which enters a square holt-528 1n the Working head,l said Wrench can therefore be easily replaced by a larger or smaller one.V

-and exchanged for new ones, Y

The reeni'orcing ribs 33 impart strength at the junction ot the hub and cylinder.

Having thus described our invention, it will be seen that our objects have been accomplished, and, though We have shown the preferred form of constructiony We reserve to ourselves the right to make minor changes providing We do not violate the spirit and principle oli' our invention. i

Ve claim:

In arbolting machine, the combination of a cylindrical housinghaving an internal gear, a coverat one end of the housing, a

hub at the other end ofl thehousing,a Working head having a flange rotatably mounted inthe housing7 a geared spindle entering the :housing through the cover and mounted in a bearing inthe Working head, planetary pinions pivotally,mounted on the `iange of the Working head, the teeth of said planetary pinions meshing with the internal gear and Withthe geared spindle.

JOHN J. oLi-nisso. HENRY F. Goss. JosEri-i n. ros.

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