US593063A - Journal-box jack - Google Patents

Description

(No Model.)

' J. P. WHITNEY.

JOURNAL BOX JACK.

No, 593,063. Patented Nov, 2,1897.

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JAMES F. WHITNEY, OF HARTFORD, CONNECTICUT.

JOU RNAL-HBOX JACK.

SPECIFICATION forming part of Letters Patent No. 593,063, dated November 2, 1897.

Application filed November 4, 1896.

To (ct/35 whom it may concern.

Be it known that 1, JAMES F. WHITNEY, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Journal-Box Jacks, of which the following is a specification.

This invention relates to journal-box jacks; and it has for its main object the provision of an implement by means of which the upper half of a journal-box may be removed from the bearing or support in which it is mounted.

As is well known, when it becomes necessary to remove a journal-box from the bearing of a machine-tool for the purpose-of re.- newing the journal-surface, or for any other reason, it is customary for the operator to dislodge the upper half of the box from its position by striking the same repeatedly until the box is loosened suificiently to permit him to withdraw it from its bearing or support, but this method of removing journalboxes is very unsatisfactory in actual practice for the reason that the journal-box is usually held so firmly by the Walls of the bearing or support that it is extremely difficult to remove the box, especially when there is but little room at the ends of the journal or the box is of very large size and hence of considerable weight.

The implement embodying this invention and forming the subject-matter of my present application is especially designed and intended as a simple and efiective device for removing the upper halves of the journalboxes of all sizes and weights, irrespective of the positions of adjacent parts of the machines or mechanisms of which they form parts.

In the drawings accompanying and forming part of this specification, Figure 1 is a side elevation of a portion of a machine-tool, showing my journal-box jack'in operative position for removing the upper half of a journal-box therefrom. Fig. 2 is a side elevation of the operating-lever of the device, illustrated 011 an enlarged scale. Fig. 3 is a front elevation of the same. Fig. 4c is an enlarged plan of the holding device of the jack, illustrated on an enlarged scale and in operative relation with the upper half of a j ournal-box; and Fig. 5 is a detail side elevation of said holding device.

Serial No. 611,015. (No model.)

Similar characters designate like parts in all the figures of the drawings.

In the preferred construction I make use of a holding device adapted to be placed between and to bind against the inner Walls of the channel usually formed in the upper side of the upper half of a journal-box and to employ in connection with this holding device an operating-lever for lifting the holding device when it is desired to dislodge the box and remove the same from the shaft. This operating-lever may be pivotally connected with the holding device and will be pivoted to a fulcrum-rod in such a manner as to exert upon the journal box a leverage sufficient for readily withdrawing the same from its support.

This journal-box jackmay be considered as comprising two main members, one of which is in the nature of an operating device and is designated in a general way by A, while the other constitutes a holding device and is represented in the same manner by C. Each of these main portions of the jack may, l1owever, and usually will, be composed of a number of parts, the'operatin g device in the pres ent instance consisting of a lever L, having at its Working end an eye or loop, such as Z, by means of which the lever is operatively connected with the holding device. This loop may be of any desired construction, but in the present case it is a simple bent-wire eye supported on opposite ends of a stud 2 carried by the lever. This lever also has a pivotal connection with a fulcrumrod, such as p, in order to permit the jack to be used in close proximity to those working parts of the machine-tool which are adjacent to the journal thereof. This rod is preferably adjustable, so as to adapt the same to different sizes of tools-that is'to say, to different heights of the journal-boxes of such tools from the base 3 thereof. In the present case the rod 19 is made up of two members, one of which is in the form of an upright or stem 3', having its lower end bored and screw-threaded for the reception of an adjustable member 4, which is also screw-threaded and is seated in the bored end of the main stem.

It will be obvious that by turning the member i in the one direction or the other the rod as a whole may be lengthened or shortened,

as may be necessary, and the lever L brought into proper position with respect to the journal-box which is to be raised. When in its proper position, the member 4 may be locked against movement by means of a clampingnut 5, carried thereon and adapted to bind against the lower end of the main stem 3.

The connection between the rod 19 and the lever L may be eifected in any suitable mannor, the rod in this instance having its upper end. bifurcated, and a pin 6 passed through projecting from the opposite side of the car-' rier 8, this latter clampingscrew being designated by 9". The clamping-screws employed in the construction illustrated are in the form of machine screws having their heads so shaped that at least one of them may he turned by means of a wrench or similar tool to tighten the holding device in its working position and to remove the same from the journal-box. In this instance the screw 9 has a square head which can be grasped by the jaws of the wrench, while the screws 9 and 9 have polygonal heads so shaped as to permit the screws to be manipulated by the fingers of the operator. All threev of these screws will preferably have their heads cupped, so as to enable them to grip firmly and bind against the walls 12 and 12 of the journal-box, such as B, between which walls the holding device is intended to be inserted.

For the purpose of connecting the holding device with the loop 1 of the operating device the carrier 8 will usually have a strong hook, such as 13, integral therewith and rising therefrom transversely to the clamping-screws in such a position, as to permit the jack to exert a straight pull upon the holding device, substantially in the central vertical line connecting the hook and the body portion of the hold ing device.

The operation of my journal-box jack is as follows: The heads of the screws 9 and 9 are first adjusted, if necessary, so as to bring the gripping-faces of the heads into the same plane, and then the holding device is inserted between the walls 12 and 12' at. the sides of the usual channel in the upper side of the upper half of the journal-box, and when the screw 9". has been turned by hand until the heads of the screws are in engagement with said walls a wrench or similar implement is applied to the head of the screw 9 and the latter is turned until the heads of all the screws bind tightly against the walls 12 and 12 and the screw 9 can be turned no farther. Thereupon the loop 1 is slipped under the hook 13 of the carrier 8, as shown in Fig. 1, and the lower end 4 is placed in position to impinge against the face of the bed of the machine-tool, from which the journal-box is to be removed, this bed being designated herein by F. The sharp points .of the supplemental stem permits the operator to obtain a firm hold upon a fixed portion of the machine, and it will be evident that by exerting a suitable pressure upon the handle of the lever L the upper half of the journal-box will be lifted away from the shaft S of the machine-tool and out of engagement with the support of the block P, in which the journalbox is mounted.

It will be apparent from the foregoing that the journal-box jack constituting my present invention forms a Very effective and simple tool for readily removing journal-boxes from their supports, and that by itsuse the operator may take out the journal-box without difficulty and without risk of injury by the sharp edges of the journahbox or adjacent parts of the mechanism.

Having described my invention, I claim- 1. In a journal-box jack, the combination of a carrier and oppositely-disposed journalbox-holding clamping-screws working in said carrier, at least one of said clamping-screws having polygonal sides adapted to be engaged by a wrench.

2. In a journal-box jack, the combination of a carrierhaving a hook, and oppositelydisposed journal boX holding clampingscrews working in said carrier, at least one of said clamping-screwshaving polygonal sides adapted to be engaged by a wrench,

3. In a journal-box jack, the combination of a carrier and oppositely-disposed journalbox-holding clamping-screws 'working in said carrier and disposed transversely to said hook, at least one of said clamping-screws having polygonal sides adapted to be engaged by a wrench.

4.. In a journal-box jack, the combination of a carrierand oppositely-disposed journalbox-holding clamping-screwsv working in said carrier, at least one of said clamping-screws having polygonal sides adapted to be engaged by awrench, said screws having cupped ends for engaging the walls of the journal-box.

JAMES F. WHITNEY.

Witnesses:

FRED. J. DOLE, BENTON N. PARKER.

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