US 2882013 A
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H. R. MARGETTS ETAL WALL wmcn WITH RESTRICTED BASE April 14, 1959 r 2 Sheets-Sheet 1 Filed Aug. 30. 1954 3nventors: MARGETTS,
HYRUMY RUSSELL 63% @Z;
LYNN F MARGETTS, r a. W (Itt ornegs.
2 Sheets-Sheet 2 HYF )M RUSSELL MARGETTS,
H. R. MARGETTS ETAL WALL WINCH WITH RESTRICTED BASE \3 \1)k\ .Q Q
April 14, 1959 Filed Aug. 30. 19 54 Affbrneyaj United States PatentO 2,882,013 WALL WINCH WITH RESTRICTED BASE Hyrum Russell Margetts and Lynn F. Margetts, Salt Lake City, Utah, assignors to The Brunswick-Balke-Collender Company, Chicago, 111., a corporation of Delaware Application August 30, 1954, Serial No. 452,770
6 Claims. (Cl. 254-186) I This invention relates to a wall winch with a restricted base, the winch being particularly adapted for use in conjunction with the basketball folding backstop for which we are making application for Letters Patent of the United States filed under even date herewith, Serial No. 452,958.
Principal objects of the invention are to provide a points where the base of the winch is attached to'its support, are reduced to a minimum.
A feature of the invention is that the drum of the winch has its winding plane substantially parallel to a wallsurface against which the winch is fastened. Accordingly, the base plane of the winch frame and the rotative axis of the worm are also substantially parallel to the wall surface.
Another feature is that the plane of winding of the hoisting cable onthe drum may be kept close to a wall surface to which the winch frame is fastened, as well as to keep the line of the hoisting cable as near as possible to the same wall surface. This enables an operator to stand in a convenient position that is neither obstructed nor obstructing when winding or unwinding the cable that. extends to the operating member of the aforementioned basketball folding backstop.
'A winch of any kind should be well greased, and where it is used in connection with indoor sports, such as the playing of basketball, it is important to prevent the lubricating grease from reaching the outside of the winch casing and therefore to keep the grease from spreading onto the playing floor. The device of the invention includes means for accomplishing that result.
In the accompanying drawings, which illustrate an excellent embodiment of the invention,
Fig. 1 represents a front elevation, in the normal position, of the winch on a wall, viewed as indicated by arrow 1 in Fig. 2;
Fig. 2, a horizontal section taken on a line 2-2 in Fig. 1;
Fig. 3, a winding tool for engaging the depending coupling hook of the winch, drawn to a reduced scale;
Fig. 4, a side elevation as seen in the direction of the arrow 4 in Fig. 1, a portion of the casing being broken away to reveal a fragmentary view of the interior parts;
Fig. 5, partially a fragmentary portion of Fig. 1, and partially fragmentary vertical sections taken respectively along lines 55 and 5a5a in Fig. 4;
Fig. 6, a fragmentary, rear elevation of certain interior parts included approximately within the broken line 6, in Fig. 4, and reflected from a mirror plane;
Fig. 7, a fragmentary, horizontal section taken along the line 7-7 in Fig. 6;
Fig. 8, a fragmentary vertical section taken along the line 8-8 in Fig. 4.
Referring to the drawing, the numeral 10 denotes an assembly showing the complete winch. Here, it includes a base plate 11 and an elongate housing or frame superstructure 12, the base being in the plane of a building wall 12a when installed. Extending transversely of the plane of the base plate 11 is the winding axis 13 of the winding drum 14. It is to be particularly noted that the winding plane of the drum 14 is substantially parallel and closely adjacent to the plane of the base plate 11 and to the surface of the wall 12a. An advantage gained by this relation between the winding plane and the wall plane is that the force moment along the fastenings 15 for the housing or frame 12 is reduced to a minimum.
The drum 14 is rotatably mounted on a shaft, presently in the form of a pin 16, advantageously welded at 18 to the base 11. The upper part of the pin 16 is held fast at 17 in the frame 12. One head, for illustration, 19, of the drum 14 is fixed on the hub 20 of a worm wheel 21 by means of a machined joint 22, the other head 23 of the drum being connected to the body of the worm wheel 21 by means of one or more threaded pins 24.
Rotation of the drum and the worm wheel assembly on the shaft pin 16 is provided for in any suitable manner, for illustration, by the journals 25 and 26, Fig. 2.
In mesh with the worm wheel 21 is a worm 27, this worm being fixed, for example, by means of the Woodruff key 28 on a depending operating shaft 29, the latter being advantageously provided with a coupling portion, for illustration, a hook 30. The operating shaft is journalled at 31 in the barrel-like enclosure 32 of the housing 12. One or more thrust bearings for the worm may be provided, one being shown at 33 in Figs. 4 and 5.
The housing 12 is integrally provided with a base in the form of oppositely extending, end pedestals 34 for attachment purposes. In attaching the winch to a wall, such as 12a, it is advantageous that shims 35 be interposed between base plate 11 and such wall.
At 36, best shown in Figs. 1 and 5, are open windows through which peripheral portions of the body 37 of the drum 14 project so that a hoisting cable 38, in winding tangentially onto or oif the body 37, clears the adjacent I 1 portions 40 and 41 of the .housing 12.
In operation, the hook 30 may be engaged by an eyelet 42 at the end of a rod 43 of suitable length, extending downwardly to a convenient point for the operator to grasp and manipulate the brace portion 44 in a manner .that is well known, preferably electrically as indicated. I
The position of the worm, as described, provides for convenient engagement and manipulation of the hook 30,
while permitting the structurally advantageous relationship between drum and base, as heretofore pointed out.
During the rotation of the Worm wheel 21, the tendency is to cause the lubricating grease to be exuded from between the teeth of the worm wheel and the threads of the worm. By means of a double-acting, two-bladed scraper 45, Figs. 4, 6, 7 and 8, the exudation of the grease is anticipated and substantially prevented. The scraper with its integral blades or wings 46 and 47 is fastened by any suitable means, such as screws 48, to a suitable part of the stationary structure of the winch so that the blades in their double action scrape off and then return any grease that tends to exude. This double action can easily be visualized from Fig. 6. If the worm wheel rotates in the direction of the arrow 49, the wiping portion 46a (Fig. 7) of blade 46 scrapes any oncoming grease and smoothly feeds the same back into the teeth. If the worm wheel is rotating in the direction counter to the arrow 49, the blade 47 performs a similar action. Obviously, the blade structure 45 should have its operating edges symmetrical with respect to a radius 50 of the worm wheel.
It is to be observed that the housing 12 of the winch may advantageously be made of cast metal relatively lightin structure, the necessary strength to resist the hoisting stress being largely' supplied by the' wrought" metal base plate 11 which extends longitudinally of the housing, The housingitself is braced longitudinally by means of structuralribs 3'4izintegralwith the base'34i therebyprovidingthe-necessary'structural strength and" rigidity. The supporting shaft'16 for the winding drum" being fixed'in the base'plate 11 andthe free endof the shaftbeing'supported'in spaced-relation to the base plate by means of the housing 12 in the form of a longitudinally extending bridge surmounted by a dome. within-which the worm wheel is rotatably disposed, all serve to make the component parts of the'winch easily and' quickly accessible.
A novel method of securing the hoisting cable 38" tothe body of the drum 14 is'illustrated in Fig. 2. Thismethodconsists in attaching'an enlargement 51 to the cable 38 byanysuitable means such as makingthe enlargement a-separate collar, slipping the same onto' the cable, and subjecting thecollar to considerable compressive stress diametrically thereof. Thereupon the forwardend of the cable is entered through anopening 52.- of' sufficient size to also admit the enlargement 51. After-- wards the free end of the cable is' pulled through a smaller hole 53. The cable isnow ready for'winding on the drum, which results in pulling the enlargement into approximately the position shown in" Fig: 2; securely anchored.
What is claimed is:
1; A wallwhich comprising an elongateframe'having spacedend'pedestals and a dome bridging the space' be tween the pedestals; a base having a superficial surface 'coextensive with the bottom plane" of the frame and separable therefrom to support the end'pedestals; adrum' shaft fixed normal'to saidbase; a winding drum having aheadjournaled on the shaft outwardly'of"the-baseya worm wheel having a hub; fixed to ,andin axial alignment with the drum, the hub being journaled on the shaft in spaced axial relationto the base;a Worm in mesh with the worm wheel; means for impartingrotative motion to said worm; and a scraper'infull'contact with and across a side face of the worm wheel for the purpose of scraping lubricating grease away frorn'the worm wheel side face when moving in'a given direction; and immediately thereafter, to guide the rejected lubricating grease into a lubricating location.
2; A wall winch comprising a' bridge frame having spaced-apart pedestals; a'baseplate extendingacross thespaced pedestals; ajournalpin fixed in the' base; a drum; journaled onthe pin; a wormwheel securedto said tions in full contact, radially, with the side of the rim of'the worm wheel;
3. In a wall winch which includes a winding drum, a worm wheel and worm for driving the drum, and means operatively mounting the drum, worm wheel, and worm, the improvement comprising a grease scraper secured in contact with and across, that:side face portion of the toothed rim. of the. worm .wheel whichis located adjacent the worm, said" grease scraper having portions extending along and directed toward. said .worrn .soas'. to scrape :lubri-i cating grease; away, from; the.;side:;face ofi the ,wormxwlieel and: guide such: grease into: said i worm;
4. The..improvemement of. claim 3,,wherein the grease scraper has oppositely directedwings to accommodate rotation of the wormwheel in) opposite: directions.
5. A wall winch, comprising, a frame structure including a base plate and an elongate frame having end pedestals on the base plate and a bridge spanning,the space between the pedestals; means for securing the frame structure on an upright'wall surface withsaid'base plate parallel'andlimmediately adjacent thewall surfaceand' with said bridge inan upright position; a drum. shaft. having one end supported on saidbase plate and; the
other end supported on said bridge; a winding drum having axially spacedv hubs one supportedon the shaft closely adjacent-the base plate and the other supported on the shaftadjacent the -bridge; a wornr wheel supported Onsaid'shaft outwardly of'said other hub and 'connectedI to: drive said drum; and a. worm journalled on said frame andmeshing with said wormiwheel to drive thelatter.
6 A wall Winch, comprising, a base plate mountable againstan-upright wallsurface; an elongate housing, frame having. spaced. end pedestals and a bridge spanning the space between the pedestals; means, for securing the pedestals to the base plate. audlthe base plate to the, wall surface with said bridge in. an upright position; a drum shaft having one end'securedinthe base plate and the other'end secured'in the bridgeea winding drum having axially spacedhubs one journalled on' the shaft closely adjacent the base plate and the other journalled on the shaft adjacent the bridge; a.
Worm wheel journalled on the shaftoutwardly of said other hub and secured to said drum; a worm journalled. on said frame in mesh with said Worm wheel and having,
drivemeans therefor projecting downwardly for, impart ingrotation to the worm; and. said frame having openingsfacing laterally radially outwardly from said shaft anddrum permitting ingress and egress of a cable on said .dr'um.
References Citediin thefile ofthis patent UNITED STATES PATENTS- 1,457,778 Lang June 5; 1923, 1,699,920 Reid Jan. 22, 1929" 1,806,482 Mellon May 19, 1931. 1,820,314 Mendelson Aug. 25, 19.31..