US2638534A

US2638534A - Reflector mounting structure

Info

Publication number: US2638534A
Application number: US92891A
Authority: US
Inventors: George A Haraden
Original assignee: HEILAND RES CORP
Current assignee: HEILAND RES CORP; HEILAND RESEARCH Corp
Priority date: 1949-05-12
Filing date: 1949-05-12
Publication date: 1953-05-12
Anticipated expiration: 1970-05-12

Description

y 1953 G. A. HARADEN REFLECTOR MOUNTING STRUCTURE Filed May 12, 1949 I'II I IN IN VEN TOR.

A. Huroden x. 7M4 ATTORNEYS George FlG.-5

Patented May 12, 1953 7 v I v PNT camel-2* TING: STRUCTURE George- .Ar HtiZtadeE-eDenvereicolo -aassignon to HeilanduResearck .Qoi'norationgaDenvermColoz; a corporation ofezfilo'lorado limitationMaximum, @Seria 'lt'Nb; 92.8.91 1

4 Claims. (01. 240-10535:

This invention-relatesi to---reflectors'--for lamps cured'thereto an upstanding arm l 6* Which-has and more particularly-to"iniproved 'means fdn a lower 'portion 11- extending outwardlyand' upmounting "the reflectors" for "association wi-th wardlyirom'the collarand an upper portion-I8- mp in"parallel-*relation-to= the axis of the flash-gun" One of the objects ofrthe' inventionvis'to -pro and-the:lamp*-'socket;*" The-arm has a concaveduce: an improvedrefle'ctor whic'sl'rcandoeeasily convex cross 1 sectionand in its 'upper "end is:

and quickly adjusted relative-"to a "lamp" ixrorder provided "with" a longitudinally 1 extendingslot" that the opticalaxis" of ithe' reflector mayrbe 19, best shown in Figure 5.* aligned with the lightirsourcert: The reflector-*- t0- -be adjustably mounted A more" specific" object' is, to prodube-an-im "on the armis of the usual type, being cup-shaped provedadjustablereflectors-formounting on fla'sh"-- to par-tiallysurround the lamp when'mounted guns ofphoto-fiash -picture taking equi-pmentz" inthe-socket-andthereby direct light rays-in- A further object'is to"producefimprovedmeans" one generalrdirection from *the 'lamp' and thereby for aohusta'bly connecting a lamp reflector on concentrate the rays L on the-object to he photoe a supporting 'bracket-armwhich williipermitthe" graphed. On the rear side of-the reflectorat refiectorrto be-easilyshifted onthe'arm-rto differ its center-is-secured-a hub 2!; also cup-shaped entpositionswithout thenecessityi-of-'operating as--best-shown-in Figures S and 4. The inside set-screwsr of this hub-has'a 'lug 22 into which a screw 23 1' Yetr'another object is ;to :produce '--'1improv.edi-f can be threaded'toattach the hub tothe reflector;- frictionatmeansforconnectingi a"reflector"tova The'hub- 2F of the reflector, in'its lo'wer and" supporting arm"which will"permitreflector-adupper side walla is provide'di-with alignedslots justment,v by. simpleupushing or pulling forces 24-and----2rvthroughwhich extends the upper'por-r and automatically -hold-the reflector in any moms-emits armw Thearm is inserted through: position... v th'e -slots otthe hubwith the screw 2 s removed. d

Other objects ofthe invention will become ap- *Aftre-the arm is -insertedrtlie reflector" is their? parent from: the--following descriptionetaken in attached-to the hubrby the screw with :the :screw connection: with the accompanying drawingsjiin t extending*- thi e o u t Q- which: the-armm Thusthe" screw and slot ls relations- Figure: :1 ,isaa side view show-ingg a lamp ,;1-e-- ship will maintain the"refleetoron the arm. '1 The fleotor mounting embodying the-inventions: -arl'angement also has the additional function-i=1 Figure-2 is a rear view of theistructureoshown ofr lil'n-iti ng--the--extent of'sliding movement of in :Figurer-l; therefl'ector on' the 1 arm winslongitudinal r direct Figure 3 is:a sectional view-itakeneon ther'lines tionswthevulimits being determinedbyt-the-;:ends:: 33 of Figure 1 showing the friction adjusting of slot' ls whi'ch actis abutmentsvz I structure; In order that the reflector and hub can be Figure 4 is a sectional view taken on the line maintained in any position on the arm to which 4-4 of Figure 2 showing additional details; and it y be li n y t p rmi th reflector and Figure 5 is a view of the upper end of the hub to be slid on the arm by a manual force, a

mounting arm. leaf spring 26 is mounted in the hub. This The reflector and its mounting, as shown, is 40 spring is U-shaped in cross section, as best shown designed for use as a part of photo-flash equipin Figure 3, and in its base portion is provided ment for cameras, and particularly for mountn Op ThiS W permit the Spring t0 ing a reflector on an end of a so-called flash gun. be placed in the hub so that the screw attach- This flash gun In, partially illustrated in dashed in lu 22 will b re ive in h p nin 1, lines in Figures 1 and 2, contains batteries, a the base of the spri il e against t e i switch mechanism and a socket at its upper Sid botto Of he b n the l por ns f end in which is mounted the flash lamp or bulb the spr n Will be in me t with the back ll. As shown, there is a switch button l2 on of the arm adjacent its two longitudinal edges. the outside of the flash gun and an ejector con- The spring is so formed that when in operative trol button l3 for quickly ejecting the lamp after position, as Shown in Fi r 3 and 4 with the it is flashed. arm extending through

slots

24 and 25 of The reflector and its mounting comprises a the hub, the legs of the spring will be flexed mounting collar 14 which can be slipped; over and apply such. pressure between the bottom the socket end of the flash gun and clamped of the hub and the arm that the front longithereto by a set screw 15. The collar has setudinal marginal portions of the arm will have frictional engagement with the surfaces of

slots

24 and 25. This frictional engagement will be so arranged by proper spring form that the reflector and hub can be quite easily shifted by hand applied force on the hub or reflector, either upwardly or downwardly, and yet when the force is removed the reflector will be firmly held on the arm at the position to which the hub is shifted.

With this frictional connection between the reflector and arm, the reflector can be easily and quickly moved up or down with respect tov the lamp socket and thereby place the reflector in the proper place to efiiciently reflect light rays from different size flash lamps which may be mounted in the flash gun socket. To prevent the reflector from being interfered with by the collar ll during shifting, the bottom of the reflector can be provided with a cut-out 28 as shown.

It will be noted that my improved adjustable reflector mounting shown and described is simple in construction, easily assembled and can be manufactured at a low cost. There is no possibility of disconnecting the reflector from the arm during any adjusting operation. No set screws need be operated to make a reflector adjustment.

Adjustment is accomplished by one hand, with either a push or pull force.

Being aware of the possibility of modification in the mounting structure described Without de-v parting from the fundamental principles of yinvention, I desire it to be understood that the invention is not to be limited in any manner except in accordance with the appended claims.

What is claimed is:

l. A reflector mounting structure comprising a bracket for attachment to a light bulb socket and being provided with an arm having a concavo-convex cross section, a reflector provided with a hub having a slot for receiving the arm, and a separate leaf spring carried by and within the hub and having a curvature in a direction '4 with a separate hub having a slot for receiving the arm, a separate leaf spring carried by the hub for acting between the hub and the arm to bias the edge portions only of the arm and one side of the slot into frictional engagement, said frictional engagement being such as to automatically hold the hub from movement on the arm unless a predetermined sliding force is applied to the reflector, and means for limiting the extent of sliding movement of the hub on the arm comprising a bolt for connecting the hub to the reflector and a longitudinal slot in the arm through which the bolt passes.

*3. In reflector mounting structure, a mounting arm having a longitudinal slot, a hub for the reflector provided with a slot for receiving the arm, means for attaching the hub to the reflector including a bolt passing through the hub slot and the slot in the arm, and Spring means for so biasing the arm and hub that the arm Will frictionally engage the surface of the hub slot, said frictional engagement being such'that the hub and reflector can be slid manually on the arm as limited by the arm slot and yet be maintained in any position to which it may be slid.

4. In combination, a reflector, a hollow memher for mounting on the rear side of the reflector and. being provided with side walls and with an integral lug projecting inwardly from the inner .side of the rear wall, said hollow member also having opposed openings in its side walls, a mounting arm having a longitudinal slot therein and arranged to extend through the openings, a screw for mounting the member on the reflector, said screw extending from the inside of the reflector through'the arm slot and being threaded into the lug, and .a spring member mounted on the lug and acting between the rear wall of the member and the arm to cause the arm to have frictional'engagement with walls of the openings in the member which are closest to the reflector.

GEORGE A. HARADEN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 365,215 Williams June 21, 1887 1,584,105 'L enz May 11, 1926 1,616,227 1 Oliver Feb. 1, 1927 2,113,777 Waterbury Apr. 12, 1938 2,314,829 Hunter Mar. 23, 1943 2,319,109 Bulloch May 11, 1943