US1610127A - Focusing lamp - Google Patents

Description

Dec. 7 ,1926.

C. E. GODLEY FOCUS ING LAMP 2 Sheets-Sheet 1 Filed Dec. 28, 1925 Dee. 7 1926.

2 Sheets-Sheet 2 3 I eOZ'O gar/e; 5 GZW V. y

c. E. GQDLEY FOCUSING LAMP Filed Dec. 28. 1925 Patented Dec. 7, was. i

flFATrFLfl CHARLES E. GODLEY, GE DETRGIT. .MIGHIGAN, ASSIGNOR. BY MESNE ASSIGNMENTS, TO C. Iii. HALL LAMP COMFANY, A CORPGRA'IION OF IEICHIGATNF roousrirc LAMP.

Application filed December 28, 1925. Serial No. 77,923.

My invention relates to the general type of headlights in which a lamp socket is mounted so as to be slidable longitudinally of the reflector, and in which the reflector is movable with respect to the lamp casing. Generally speaking, my invention aims to provide simple, easily assembled and inexpensive focusing means for moving the socket longitudinally, and also provides spring means operating through a part of the focusing means for pressing the reflector against the door of the lamp.

For a part of these purposes, my invention provides a lamp construction in which the focusing adjustment is made by a member threadedly connected to the socket and extending slidably through the back of the casing in axial alinement with the socket, and in which a thrust member operatively secured to the reflector prevents a longitudinal movement of the threaded member in one direction, while a spring operatively interposed between the socket and the thrust member holds the latter in engagement with a portion of the threaded member. It also provides a. spring interposed between the thrust member and the casing for holding the reflector in tight sealing relation to the lamp door.

More particularly, my invention provides means for adjusting a lamp socket with re spect to a sleeve in which the socket is slidably disposed, and for this purpose includes a thrust-receiving yoke attached to the sleeve and cooperating with the lamp casing in guiding the focus-adjusting member. It also provides a construction for this purpose in which the yoke can readily be at tached to the sleeve while the yoke is in an inoperative position, and in which the yoke is held pivotally interlocked with the sleeve when in its operative position so as to per mit the focus-adjusting member to aline with the socket without cramping the socket in. the sleeve.

In its immediate commercial applications, my invention is particularly adapted for use in automobile headlights of the general type in which the reflector is floatingly. supported with respect to the lamp casing and in which the lamp socket is carried by the reflector. Hence I am illustrating and describing my invention in such an embodiment in the following specification and the accompanying drawings from both of which Fig. 3 is an enlarged and fragmentary sec tion, taken along the line 3-3 of Fig. 2.

Fig. is a view of the socket-carrying sleeve and adjacent parts, looking upward from the line 44: ofFig. 1, but with the yoke. swung to the inoperative position in which it permits a ready insertion of the socket in the sleeve.

Fig. 5 is an enlarged section, taken along the line 5-5 of Fig. 1. V

Fig. 6 is a view similar to Fig. 2, but showing another embodiment of my invention, namely one in which the sleeve has projecting ears interlocking with the arms of the yoke.

Fig. 7 is a bottom plan view of the same embodiment, taken from the line 77 of Fig. 6, with the yoke swung to the inoperative position in which it is detachable from the sleeve.

Figure 8 is an enlarged end view of the same embodiment, taken from the righthand end of Fig. 7.

Fig. 9 is a view similar to Fig. 6,'but looking in the opposite direction and with the yoke omitted, showing the ears on the sleeve.

Fig. 10 is an enlarged section taken along the line 1010 of Fig. 6.

Figure 11 is a section similar to Fig. 10, but showing the yoke in its attaching position.

Referring first to Fig. 1, this shows an automobile headli ht in which the body 1 of the casing is contracted at its forward end to fit the lens ring 2 of a door which includes the usual lens 3. The door is rigidly secured to the body 1 by any suitable means, as for example by screws connecting ears welded respectively to the doorand the body, such as the screw 17 connecting the ears 37 and 32 of Fig. 1. The body 1 also has an inwardly directed radial flange 4 disposed at some distance behind the radial rim flange .5 of the reflector 6, and the body flange t carries guide screws 7 which extend through corresponding perforations in the reflector flange 5 to guide the reflector, each screw having its head 34 normally spaced forwardly from the reflector to act as a stop for retaining the reflector in the lamp body when the door detached. A packing ring 8 is disposed bet-ween this reflector flange F and the lens, the reflector being continuously pressed toward the lens by means hereafter described.

Secured to the central portion ot/ the reflector 6 and desirably coax? i with the re Hector a sleeve 10 which serves as a. support and. guide for the lamp soc-hot shell ii. For this purpose. the {generally cylindrical tubular sleeve 10 may have a peripheral head 12 formed near its forward end for engaging; the rear of ti 0 reflector, as shown in Fig. 5. and the forward end of the sleeve may then he spun ()llbll'ttl'tl to provide a flange l3 cl..-in'1p....ig the reflector against the h )tttl 12.

The socket shell 11, which normally supports the usual hin'ip bulb 13, extends slidably through the said guide sleeve it). A iraclict stem l-l; soldered to one side of the ocltct shell and longitudinal edges of a slot 15 formed in the guide sleeve. so as to prevent the lamp )chct "ti-om rotating in the sleeve. The racket stem lit has its rear portion bout a right. angles and attending across the axis oi: the socket as shown in FlfIS. 4i and so as to present a thrust portion which is offt'cct'ively a rigid partof the lamp socket.

Secured to the guide sleeve 10 is a thrustrcc 'ing' momlgier which den" ably is in the for n of :1 yohc having its two arms secu ed to he sleeve and having its lj)l.',1l1t 17 dicposcd at some tils 'illltitliiflilitl tlm thrust ortiou 17; of ti no c';ct ldxteudinzt "through these pan is i nd i? is l-wusadjusting member '18. which t. sirahiy is threaded thx -1 th rt e bracket portion cc 7': vcly swi 've led lip-T111 the soclict wh oil ii' oi: thi guslte. To ati oru t is sw "cling connert' =11. line =1 empi y a l! c 19 extend q trans ersely through ting member 18 and hcarimr against the rear face of the bio-ht l7. and interpose a (10lTl'')ltIi in}; 20 betwcei'i the bracket (or thrust portion! of the sec rot and the slidably guided by the the reflector forwardly agrns the p ring 8, thereby insuring a Hill; set; the mouth of the reflector by the door.

To co meet the yoke l6 operatirci with the guide sleeve it) while permitting a rarity rtino' oil. the 5: j in the sleeve. l pret .1 7 *ot ...'..e a of the to the sleerc. For this mrprrse Fig. arm 16 of the yoke as having a c. ular p. t' t rd. the other arm by a. partial pui'ichiug operation, and shows the iailcerc. 10 as provided with opposite pcrtin'atious tit-ting these circular nulls 25. It also shows a spring; clip 236 having oopt ed nuhs s? respectively entering the recesses 1noduccd in the yoke arms 16 by the said punching operations, this clip having a contracting tentlcn-cj,- so as to hold the nuhs :--'r';\','l cted in the g'icriorations of the sleeve. ll' hcn the spring); clip is detached, the arms of the yoke can readily be sprung apart to release the nuhs from the sic-eve. the yolie can initially he attac d sleeve in the pi sition shown in l 4, so as not tointerterc with the inserting of the socket ll into the sleeve. When attached. the yoke is pivoted to the sleeve, thas perlack of exactness in alining these, thereby preventing the socket from cramping in the sleeve.

lVith the parts thus arranged rotation of the adjusting member in either direction wi l move the sochet either forward or rearward. the head 21 of this member being, easily accessible for this purpose by extend through (or at least into) a suitable per 3t! :ation in the rear end of the amp body, and my licensing device can easily be adept ed to hnup bodies o't vr'irying lenq'ths lay merely varying the length of the adjusting member 18.

However, I do not wish to be limited to the details of the construction and arrangeirent heretofore described, since many changes might obviously be made without departing either from the spirit of my invention or from the appended claims.

For example Figs. 6 to 11 show an embodiment in which a pair of opposite projecting and substantially T-shaped cars 33 are formed from the guide sleeve 10*, and in which. each arm 16 of the yoke has a peritoration 34. "Each of these perfoations is formed so that the head of one car 33 canv readily he slipped through it when the yoke is in the position ot Fig. 7. and so that :1 part of the yoke will be interposed between the sleeve 10 and the head of each ear when the yoke is in its normal position of Fig. 6.

So also, I do not wish to be limited to the use of my focusing): device in connection with a spring operating through it. for urging the z. is

reflector forwardly, F or example, Fig. (3 shows the operating member 18 as having an integral collar 35 engaging the bight 17 of the yoke and held against this bi 'ht by the spring 20. In either case, the spring 520 can be quite light, but a heavier spr' is dosirable for the spring when this is used. as the latter opcrates through the yrd-ze and sleeve for pressing the reflcctm' and the packing ring 8 inst the lens. Since the entire focusing arrangement is oporativcl; carried by the reflector, the latter is free to be moved by the spring 2% without altering the focusing adjustment.

The bracket comprising the parts 1% and 15 is effectively a rigid part of the socket, although here illustrated as separately formed, hence the socket together with this bracket constitute a rigid socket member.

I claim as my invention:

-l. In a lamp, a reflector, a sleeve fast upon and extending axially of the reflector, a lamp-bulb socket slidable in the sleeve, a yoke having its arms secured to the sleeve and having its bight disposed behind the socket, a bracket fastened to the socket and having a portion disposed between the socket and the bight of the yoke, an adjusting member extending slidably through the bight of the yoke and threadedly connected to the bracket, the adjusting member having a part engaging the rear face of the bight, and a compression spring operatively interposed between the socket and the forward. face of the bight.

2. I11 a lamp, a reflector, a sleeve extending rearwardly from the reflector, a lampbulb socket slidable in the sleeve, a yoke having its arms pivotally connected to the sleeve on an axis transverse of the socket; a lamp body housing the reflector, sleeve and yoke; and threaded means interposed between the socket and the yoke for sliding the socket with respect to the sleeve, the threaded means extending through the bight of the yoke and extending slidable through the body so that the said extension of the threaded means through the body and yoke cooperate with the threaded connection of the threaded means to the socket for preventing movement of the yoke about the said pivoted connection of the yoke to the sleeve.

3. In a lamp, a casing, a reflect-or supported in the casing for movement forwardly and rearwardly of the casing, a sleeve fast upon and extending rearwardly from the reflector, a lamp-socket extending slidably through the sleeve and including a. thrust portion extending across the axis of the socket, the casing having a perforation in its back alined'with the axis of the socket, a thrust member connected to the sleeve to prevent forward or rearward movement thereof with respect to the sleeve, the

thrust member having a thrust receiving portion extending across the axis of the socket and disposed at some distance behind the said thrust portion of the socket, and. an adjusting member extending through and swiveled upon the thrust receiving portion of the thrust member and threaded through the thrust portion of the socket, the adjusting member extending slidably through the said perforation in the back of the casing.

at. In a lamp, a reflector, a tubular guide fast upon the reflector and extending rearwardly from the reflector, a socket member slidably carried by the guide, a casing having a perforation in axial alinement with the socket member, a thrust member so connected to the guide as to prevent movement of the thrust member longitudinally of the socket member; and an adjusting member extending slidably through the perforation in the casing; the adjusting member extending through both the thrust member and a portion of the socket member and being respectively swiveled upon one and threadedly connected to the other thereof.

5. In a lamp, a reflector member including a reflector and a rearwardly extending guide fast on the reflector, a lamp-socket supported by the guide for movement axially of the reflector and having a thrust portion extending across the axis of the reflector, athrust member pivoted at its forward end to the guide and having a rearward portion extending across the said axis behind the thrust portion of the socket, an adjusting member extending through and swiveled upon the rearward portion of the guide member and threaded through the thrust portion of the socket, and a lamp body housing the reflector and having a rigid portion thereof slidably guiding the adjusting member behind the thrust member.

6. In a lamp, a reflector, a sleeve fast upon the reflector, a lamp-socket slidable in the sleeve, a yoke straddling the rear end of the sleeve and having its arms respectively pivoted to opposite sides of the sleeve, the yoke having its bight disposed behind the socket, yielding means for holding the said arms in pivoted engagement with the sleeve, and threaded means interposed between the socket and the bight of the yoke for sliding the socket with respect to the sleeve.

7. In a lamp, a reflector, a tubular guide extending rearwardly from the reflector, the guide having oppositely disposed lateral perforations, a lamp-socket slidable in the guide, a yoke freely straddling the rear end of the guide and having its arms provided with oppositely directed fingers respectively entering the said perforations, a detachable retaining member engaging the outer faces of the arms to hold the fingers in the perforations, and an adjusting member interposed between the socket and the bight oi the yoke, the adjusting member being swiveled upon one and threadedly conneeted to the other of the parts between it is thus interposed.

8. A lamp construction as per claim T, in: which the retaining member has projections directed toward each other, and in which each arm has a portion offset toward the other arm so as to afford one of the 10 said fingers and so as to provide an outward-- 1y open recess entered by one of the projections on the retaining member.

Signed at Detroit, Michigan, December CHARLES E. GODLEY.

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