US1453297A - Lamp mounting for certain optical instruments - Google Patents

Description

May 1, m.-

R. H. WAPPLEW LAMP MOUNTING FOR CERTAIN OPTICAL INSTRUMENTS Filed March 15, 1920 REINH OLD 15%55? TMM A TTORNE Y l atenterl ay ll, 'll llllilh B'IEINHUlLlU llil. WAJPPLER, 01F YONKERS, lll'l lll i TUBE, .l-lrlElElElIGI-IOR TO .tlMlElRIGAN CYSTO- FdUUlPE llttllllilldldfi, ltlll'll, it 'llOlitlE'UlEtllUlfION OF lillilllli YORK.

MOUNTING lEUlEt GERTATN OT'ULTGAL IhTETlEtUMEhTTS.

Application filed March 15 To all whom it may concern:

Be it known that l limnnorn ltl. l l ar- PLER, a citizen of the United Eitates, residing at Yonkers, in the county of d estchester tl and State of New York, have invented cerltl lid

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tain new and useful Improvements in Lamp Mountings for Certain Optical linstruments, of which the following is a full, clear, and concise description.

My invention relates to lamp mountings for certain optical instruments, my general purpose being to enable the operator to quickly and easily lock the lamp in adjusted. position relatively to other parts.

More particularly stated, my invention deals with a miniature incandescent lamp bulb having a hood. and provided with a threaded supporting stem to be screwed into a lamp socket carried by a tubular sheath or optical barrel through which the operator gases by aid of light from the lamp; and my improvement contemplates means whereby the operator, in turning the lamp bulb, incidental to screwing the stem thereof into the lamp socket, can always leave the lamp socket in such position that the lamp window occupies a predetermined normal position relatively to other parts.

Reference is made to the accompanying drawing forming a part oi this specification, and in which like reference characters indicate lilre parts throughout the several fig-- ures.

Figure l is a side view, partly in elevation and partly in section. showinn one torm ol': my invention as applied to a cystoscope.

Figure 2 is a plan view oil the device shown in Figure "l.

Figure 3 is an enlarged tranmentary sec-- tion. corresponding: to a portion oi Figure l.

Figure lis a vertical longitudinal section through a certain form ot endoscope. equipped with a term of my invention dit l erinsr from that appearing in Figures 'l. and 2.

Figure 5 a section on the line tie-All cit lligure 4, looking. in the direction indicated by the arrows.

The optical barrel cit a cystoscope shown at 4:. and is made oi metal. The eye piece appears at 5. a lens at 6. and a speculum at i; This speculum is of the type known as a. three-quarters sphere. lit would be spherical iaao.

except for the tact that about one-quarter oi it is cut away. ll wedgeshaped base 8, housed within. the barrel 4:, is used in sup porting the speculum.

The optical barrel. lis provided with an upturned cylindrical end portion 9, threaded internally at and serving; as a lamp socket. Fitted into this socket is a bushing 11 of insnlatingmaterial. carrying a contact member 12 ct metal. This contact member is provided with a sprint; portion 1%. Connectedwith the contact member 12 is an in? sulated wire 13. leading; to a binding post 14:. carried by the barrel 4: and insulated therefrom. Another binding" post 15 is mounted upon the barrel 4: and is in metallic contact therewith.

A miniature incandescent lamp bulb 16 carries a lamp hood 17, made of metal and provided with a window 1.8. The lamp bulb is provided with a threaded sleeve 19, carrying; a cylindrical member 1.9 of insulating material. of the hind. commonly used with lamp bulbs this type. and is turther pro vided with the usual centrally-disposed contact button 9.0. The threaded supporting stem 19 and the contact button 20 are connected with the lamp filament, shown at 2.1.

The parts are so proportioned and arranpje'd that the contact button 20, carried by the lamp bulb. can be brought into engagement with the contact member 12 by screwing the stem 19 into the socket 9.

it. looking: ring]: is revolubly mounted upon the threaded stem 19. and tor this purpose is threaded internally. This locking rinrr serves generally the purpose of a jam nut. l l 'hen lorced tightly against the ad jiacent end portion 9 of the barrel t. it loclzs the lamp stem 19 rigidly in. relation to the barrel. ln doing this. it v rtually locks the lamp bulb. and the hood 17 carried thereby, rigid relatively to the barrel. When this is done. there is usually a slightspace between the loclrinc; vine. 22 and the adjacent end portion oil the lamp hood.

The contact button E20 should always be in actual cu, m ment with the contact menu" her 'lil hetero the locking: rinp; is torced against the portion 9 oi the barrel.

The purpose of the locking ring: 23 is to so secure the stem 10 and. all parts carried thereby as to leave the window 18 facing in lit;

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exactly the same radial direction as the exposed portion of the speculum 7.

lVith the device in the condition just described, the lamp circuit may be traced as follows: Binding post ll, wire 13, contact member 12, contact button 20, lamp filament 21, stem 19, barrel 4:, binding post 15 to source of electricity (not shown), and thence back to binding post 14. This circuit energizes the lamp.

Except for the use of the locking ring 23, in the relation above described, the lamp window might face in almost any radial direction when the lamp stem reaches the limit of its travel in the socket.

Since incandescent bulbs of this type are renewed quite often, and since as a rule such lamp bulbs are not exactly alike, it may readily be seen that special provision is necessary in order to enable the lamp window to be brought into exact registry with the exposed portion of the speculum 7, as above described.

In Figures 4: and 5 I show another form of my device, applied in this instance to an endoscope.

The barrel of the endoscope appears at 24: and the eye piece at 25. lWounted within the barrel is a lens 26. supported in position by a mounting 27. Theeye piece 25 carries a supporting pin 28, and mounted upon the latter is a plate 29. The upper end of this plate serves as a lamp socket and is suitably formed for the purpose.

An incandescent lamp bulb is shown at 30, and is provided with a threaded stem 31. A locking ring 32 is revolublyfitted upon this stem, and serves to lock the stem 31 rigidly in relation to the plate 29.

The incandescent bulb is provided with a filament 33, having the form of a fiat loop, as shown. hen the device is in active use, the plane of the filament should be vertical. This is on account of the optical relations of the filament to the lens 26, and to the position of this lens relatively to the barrel 24, That is to say, the distribution of the light from the filament should always be such. as to enable the operator to look through the barrel 2% by glancing over the top of the plate 29, and experience shows that with the operator thus looking through the barrel the light is distributed to the best advantage when the general plane of the filament is strictly diametrical relatively to the barrel, and therefore vertical as the device is normally used. Another way of stating practieallvthe same thing is, that the lens 26 distributes the light to better advantage if the filament occupies a vertical plane cross ing the optical center of the lens.

The lamp bulb 30 is first adjusted by turning it until the plane of the filament occupies the position just described, and then the locking ring 32 is jammed against the plate 29, so as to lock the bulb rigidly in po. sition.

Thus in a general way the function ol lhe locking ring 32 is closely analogous to that of the locking ring 22 above described.

I do not limit myself to the precise mechanism shown, as variations may be made therefrom without departing from my invention, the scope of which is commensurate with my claims.

Having thus described my invention. what I claim as new and desire to secure by lieters Patent is as follows:

1. In a device of the character described the combination of an optical barrel. a lamp socket carried by said optical barrel, an incandescent lamp bulb provided with a stem fitting into said lamp socket in order lo sup port said incandescent lamp bulb thereupon. so that said lamp bulb may be turned relu tively to said socket and means controllable at the will of the operator for securing said stem in different radial positions relativelv to said socket.

2. In a device of the clnn'acter described the combination of an optical barrel, :1 lump socket carried by said optical. barrel, an incandescent lamp bulb provided with a stem fitting loosely into said lamp socket in order to support said incamlescent lamp bulb thereupon so that said lamp bulb may be turned relatively to said socket, and a. clamping ring mounted upon said stem for the. purpose of locking said stem relatively to said socket. I

3. The combination of a lamp socket provided with a thread, an incandescent lamp bulb provided with a thread for engaging the thread of said lamp socket in order to support said incandescent lamp bulb thereupon so that said bulb may be turned relatively to said socket, and a clamping ring mounted upon said stem and revoluble relatively thereto in order to jam against said socket and thus to hold said lamp bulb in different radial positions relatively to said socket. I

4-. The combination of an optical barrel. an incandescent lump bulb supported by said barrel and adjustable relulivcly lbcrclo ilor the purpose of enabling the operalor lo see through said optical barrel. and means controllable at the will of the operator l'or clai'nping said lamp bulb in any predeler mined one of an iuliuite number of positions relatively to said barrel.

5. The combination of an optical barrel. :1 speculum carried thereby and 'lucing ru dially therefrom, a hood mounted upon said optical barrel and provided with :1 window. said hood being rovolublc relatively to said barrel in order to turn said window relatively to said speculum, a lamp mounted within said hood and adapted to shed light through said window, and means controll, 4t fill ,til W" lable at the will of the operator For clamp-- li'lin carried bv said barrel and lae ra dially tberei" i. an. incandescent l bulb provided with a threaded portion engaging" said threaded portion olfsaid barrel, a clamping; ring carried by said threaded por tion of said lamp and fitted so that the will of the operator said clamping: ring; may be jammed against said barrel, so as to se cure said in lescent lamp bulb in prom determined position relative to said barrel, and a hood mounted upon said incandescent "lamp bulb and provided with a Window wl'iioli tacos radially therefrom.

7 The :ombination of an optical barrel provided with a threaded portion, a spewlum married by said barrel and facing radially tlieetrom a lamp provided With a threaded stem for engaging said threaded portion of said barrel, so that said lamp may be turned relatively to said barrel a locking; ring revolubly mounted upon said stem and adapted to be jammed against said barrel in order to look said lamp in a predetermined position relative to said barrel and a shielding member carried by said lamp and adjustable therewith relatively to ii d barrel, said shielding; member having a window so positioned. that the adjustment of said lzmrp brings said Window into a predetermined position relative to said speculure.

ltlfllNl-IQLD H. VVAPPLIER.

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