US1794494A - Bearing puller - Google Patents

Description

March 3, 1931. R NOBLE J 1,794,494

Q BEARING FULLER Filed Feb. 25, 1929 Patented Mar. '3, 1 931 UNITED STATES RONALD 1a.. NOBLE, or sroxnnniwasnrnerony BEARING r LLna j Application filed February 23,

My invention relates to bearing pullers and is an improvement over my prior patent of.

With the above and other objects in view which will appear as the description proceeds, the invention consists of the novel construction, adaptation, combination and arrangement of parts hereinafter described and claimed. vThese objects are accomplished by devices illustrated in the accompanying drawings; wherein I Figure 1 is a plan view of my device with its side jaws held in a vise and with its notched gripping ends in engagement with the bearing of an electric motor and with its screwbar engaging the motor shaft in position for removing the motor bearing;

Fig. 2 is a fragmentary plan view showing the gripping ends of the side jaws with their fiat inner recessed walls in engagement for removing a gear wheel from its shaft;

. Fig. 3 is a reversed perspective view of the device and showing, in dotted lines, an ordinary clamp holding the side jaws in constrained engagement with a motor bearing and also showing the detachable wings in dotted lines;

Fig. 4 is a fragmentary perspective view showing the inner side of one of the jaw gripping ends;

Fig. 5 is a view in end elevation of the jaws showing their notched gripping ends in four point engagement with a bearing; i

Fig. 6 is a view in perspective'of one of the detachable wings; and

Fig. 7 is a view in transverse section through one of the side jaws and wings.

Referring to the drawings throughout jaws to hold the wings in position.

jse r'i' i no. 242,071.

which like referencenmnerals designate like parts, thenumeral' 5 indicates a cross-head having slots 6 in its ends and semiannular transverse grooves 7 in its outer corners. Side j aws 8 have reduced shanks 9 that fit snugly within said slots, and cylindrical lugs'lO on the outer ends of said shanks bear snugly within said transverse tachable hinge joints.

A flat expansion spring 11 has its ends respectively secured to lugs'formed on said jaws and normally retains-the jaws inanopen po-' sition. Stops 13 are formed on the inner side of the crosshead 5 thatare arranged to engage shoulders 14: formedon the jaws at'the inner ends of the shanks 9 and thus retain the spring from causing said'jaws to swing wide open as will beunderstood.

"The gripping ends of the side jaws '8 are rounded on their exterior portions while their llliellOFPOItlOIlS are recessed. at 1.5 to form' flat end walls 16 for reasons presently set forth. Said endsare notched in angular fashion at17 andbeveled at 18 to provide effective means for engaging a bearing at four points as designated by the numeral 19 in Fig. 5.

Detachable wings 20 are provided for the jaws 8 and are formed of spring metal with right angle flanges 21 having annular 'de' pressed bosses 22 that register with corresponding indentations 23 in the sides of said Said flanges are also provided with right angle bottom portions 24 that fit snugly against the uudersides of said jaws and have upstanding spring lips 25 that serve as additional securin g means by holding said flanges in comprcssion against the sides of said aws. It will be obvious that said wings may be readily at tached to and detached from the jaws.

A. screwbar- 26 is threaded centrally through the crosshead 5 and is provided on its inner end with a conical engaging point 27 and on its outer end with an angular head 28 adapted to be turned with a wrench or the like.

In the'practical use of my device the gripping ends of the jaws 8 are placed in engagement with-a bearing 29 of a motor or the grooves to form deg like, such as shown in Figs. 1 and 5, With its edges 18 -1n engagement therewith. Said aws are clamped between a vise 31 with the wings 20 resting on its top as shown in Fig.-

1 and thus holding said jaw edges securely in engagement with the bearing that is to be removed. The screwbar 26 is then set up until its point 27 centrally engages the shaft 32' of the motor. Itwill now be apparent thatthe hearing may be pulled from the motor by further turning the screwha r with a wrench. ,7

In cases where a vise is not available an ordinary clamp, as shownuin dotted lines in Fig. 3, may be used. In this case- I usually provide depressions in the ends of the jaws, such as shown at 33, for'engagementf by the clamp and to prevent same from slipping as will be understood. 1 I

:Referring, to'Fig. 2, in the removal of a gear 34 or the like its periphery is disposed within the recesses lo with the flat walls 16 in engagement with the side of the gear which is then removed in the previouslyfdescribed in 5.1111181 L- Having thus described my inventionwhat I claim and desire to secure by Letters Patent of the United States is 4 A bearingpuller comprlslng a crosshead,

a -screwbar,- sidejaws detachably hinged tothe'crosshe'ad, a flat spring arranged toretain the jaws in a normally open position,-meansv for limiting the opening movement of the jaws, the gripping ends of the jaws having recesses and flat' walls, detachable wings for the jaws, and means for resiliently retaining the Wings in place.

In testimony whereof I afiix my signature.

RONALD B. NOBLE.

Images