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Publication numberUS983742 A
Publication typeGrant
Publication dateFeb 7, 1911
Filing dateApr 20, 1910
Priority dateApr 20, 1910
Publication numberUS 983742 A, US 983742A, US-A-983742, US983742 A, US983742A
InventorsJohn W Mead
Original AssigneeAlbert H Deremo, Gustin Welch, Duncan A Carmichael, Estella Beeman, John W Mead
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric hand-lamp.
US 983742 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Patented Feb. '7, 1911.

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Patented Feb. 7.1911.

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Speculation o! Letten latent. Application tiled April 20, 1910. Serial No. 558,515.

Patented Feb. 7, 1911.

To all whom it may concern:

Be it known that I, JOHN W. MEAD, a citizen' of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in'Electric Hand-Lamps, of`

which the following is a specification.

This invention relates to an electric hand lamp. The c urrent for lamps of this character has heretofore been furnished by dry teries located in the handle of the lamp. Inasmuch as such batteries are necessarily small they soon become exhausted and require frequent renewal, thus involving constant expense for maintenance.

It is the 'object of this invention to produce an electric hand lam containing a magneto for generati e current for lighting the lamp, the ody of said lamp having preferably the form of a pistol or revolver and the armature being operated by a trigger in substantially the same manner in which a pistol is fired.

Intlie accompanyin' drawings consist I 4of 2 sheets: Figure 1 l? m in line 3 3, Fig. 2. Fig. 4 is a vertical cross section inl line 1 -4, Fig. 2. Fig. 5 is a front elevation of the lamp. Fig. 6 is a side elevation thereof with the near side wall or covering piece removed. Fig. IPis a fragmenta sectional elevation, on an enlarged scale, owin themanner of mountin the incandescent` amp bulb on the oles o the ma neto. lFigs. 8 and 9 are on 'tudinal sectional' elevations showin m cations of the means for operating tghe armature of the m eto.

Simi ar letters of reference indicate corresponding `parts throughout the several views. The han`dle of the lamp .is so constructed that it has the general appearance of the handle or stock of aV pistol or revolver so object to be i uminated 1n the same manner in which a pistol is pointed at the object to bat-l may be pointed toward the be shot at. This handle supports the incandescent lamp at the front end of the same which corresponds to the front end ofthe pistol barrel andthe armature of the magieto which gtndegates the current for the amp 1s opera y a finger ressed tri er located on the underside ofpthe barre ger front end of the handle, so that the magneto may be operated by pulling the trigger in the same manner in whlch a pistol is fired. A device of this character therefore serves not only for illuminating purposes but also for frightening trespassersinto the belief that they are being threatened with a pistol.

The main part of the handle is formed by the steel magnet of the magneto which magnet is preferably of the horseshoe type and comprises upper and lower legs A, Af the front ends of which correspond to the barrel of a pistol and are substantially parallel and form the poles ofthe magnet while their tol and are curved concentrically and--connected by the cross piece or bar a.

- In the lield between the poles of the magnet the armature B `is arranged, which 1s mounted on' a horizontal transverse shaft b. This armature may be rotated by any suitable means but preferably by -a finger erated trigger C which is mounted on underside of the lower magnet l .so as to be ca ble of longitudinal reclprocation and w ich is operatively vconnected with the armature for transmitting, power from the trigger to the amature for operating the latter. The preferred way of mounting the trigger consists .in constructing the same in the .hrm of a dove-tail in cross section, as shown at c, and slid' the same in a corres ndingly shaped guldewa cl formed on t e lowerside of the lower eg of the magnet and extending through the rear part of this leg, as shown in Fi 2 and 4.

'Ithehmeans whereb t e movement of the tr' is transrnitteV to the armature prefera y comprise a spring ower storing device which is wound up Iby the-backward movement of -the trigger and gives ofi power while the trigger 1s moving forward,

theipby cans' the'armature -to run more For o taining the desired speed of rear ends correspond to the handle of a pis'- storing -edon y detent pawl`prevents unwinding 'and com' the legs of the ma ate shaft and also provided with a-gear wheel the armature a speed multiplying aring` is preferabl kinterposed between t e lw'er evice and`the armature. j n ,its preferred form- ,thisk amature drivin mechanism is constructed as follows:-` y represents a spiral spring arran `d in the space between therear parts of t e magnetlegs and having itsinner end secured to the hub of a ratchet wheel e which turns looselv on a rear transverse shaft E. Forward turnin movement of the ratchet wheel is upon moving the r backwardly `by means of a lever which isv Eivoted at its lower end loosely on the shaft and connected at its upper end with'said` trigger and a driving dog or pawl f mountthe rock lever and en ging with the teeth of the ratchet wheel. ackward movement of the ratchet wheel is prevented b a detent pawl or dog G pivoted on the a jacent part of the magnet and held by a s ring d in engagement with the teeth of t e ra et wheel. Forward movement of the trig er and lever F is e'ected by a spring secured to the ma" et and engaging with the inner en'd o -said lever, as shown in Fig. 2. Upon pressin the trigger backwardly the inner part o the wer storing spring Dis wound up` but uring the forward movement of the trigger the' els the same to expend its resilience in iving the armature. Motion ma betransmitted from the outer end of e power spri to the shaft b of the armature by any suitab e gearing that shown in the drawings com rising a casing H secured to the rear slha E and connected with the outer end of tie ower sprin a rimaryor rear gear whee I secured tgdthe'liear shaft, an intermediate shaft J provided with a inion j meshing with the'rear' gear wheel and a front shaft K .provided .with a pinion le* which meshes with a gear wheel k on the intermedi- L which meshes with a pinion'l on the armature shaft; Y By thus interposing the power 'spring between the trigger andthe train of gearing whichoperates the armature the spring can' be wound u (lligwintermttently pressinawthe trigger a `ardly but power is d vered constantly bethe spring to the armature whereby the la r is rotated uniformly. l.

The shafts of the armature, power spring and gearing are preferably Journaled in bea-rings formed in side frames m which lare secure to the opposite longitudinal sides of the magnet l as sho'wn in Figs. 8, 4, andl 6. The opposite sides of the space between et are normally closed i by covers or side p ates or pieces M secured to the magnet b `screws m1, as shown, or by an other suitab e means.

the armature ma v be modifiedz as shown in Figs. 8 and 9.

he construction shown in Fig. 8 comprisesa rock lever Fx pivoted at one'end'of the magnet and `connected at its other end with the vtrigger C1, a gear se ment 9 arranged on the ever F" and mes ing with a piniono1 ontlie rear shaft E1, a ratchet wheel p connected with the pinion .o,

a s ring ressed awl ordo en 'n wit the pteeth of the ratchgetpwhelan mounted on the llirimai'y or, rear gear wheel I, anda sprin th U enga `g wi e r' segni ent.V pon pressilnlg the triggergei1 backwardly the ratchet wheel p is coupled with the rear gear wheel `I1 by Athepawl p1, so that the motion of the trigger is transmitted'by the intermediate gearing "to the armature. During the forward movement of the trigger under the action of the s rin `d1 the'ratchet wheel moves backwa id y past the pawl pzwh e the wheel `Il continues to move forwardly independently of the ratchet mechanism, thereby causing 'the armature to run practically continuous in the same direction.

The driving iechanism shown in Fig. 9 comprises a gear rack g connected directly with ythe trigger C, a= mion mounted on a rear shaft 1 and m ing with the rack, a ratchet whee r connected with the pinion g, a gear wheel I mounted on the sha-ft g1 and meshingwith the inionlr1 of the front shaft, a spring presse pawl r mounted on the gear wheel I and engaging with the ratchet wheel r, andk a sprin d secured lto the magnet and engaging wi the gear rack and operating to normally push the saine and t wardly. Upon pressing the trigger backwardly ,the amature is turned and u n releasing the trigger the spring d* pus es the` same forwardly while the ratchet mechasecured to the magnet and e trigger connected therewith fornism permits the armature to continue its movement in the same direction.4

The burner of the lamp is arranged between the poles of the magnet and consists of an ordinaryY incandescent lamp havin a y lass vacuum' bulb S and a filament wit` in t e bulb. The latter has a metallic screw threaded shank s which forms one terminal of the lamp filament and a central contact 81 forming the terminal of the other end of the filament and supported onthe shankby an insulatin disk t. v Y

Sec Ito the front ends ofthe poles of them et is a rearwardl dished reflector U of diama etic materi such as brass or cop r whic is provided between the poles wi `a screw threaded socket u. Centrally within this socket is arran ed aycontact c which is su ported within t e socket by an insulating iskv.

w, 1b* represent two brushes eng 'g with oppositesides of a commutator on the iso .i despu with the retlcctorsocketU and t econtact v Y iespectively. L Upon screwin the shank o the incandescent/f lamp into t e socket until the contacts v, s engage as shown in Fig.A T, the electrical circuit trom the armature to the lamp is com leted, thereby causing the lamp to be ligliled uponV rotating' the armature.

In front of the incandescent lam isarriiiivrd a lens y for :iiitensiying er light of t'lie incandescent lamp. his lens `is secured at its edge between the margin of the reflector which engages with the rear side of the lens and a fastening ring sof diama netic material engagin with the front si e of the lens and secure tothe reflector and magnet means.

IV claim as niy invention: 'l 41. An electric .hand lamp compris a iimgneto having its magnet construe r'to form a handleand an incandescent lamp mounted on said magnetfand connected in circuit with the armature of the ma eto;

2. An electric hand lamp comprisin a magneto having its magnet constructe to forni a handle which has the shape of a pis-V tol, and an incandescent lamp'mounted on` the magnet and connected in circuit with the armature of the ma neto.

3. An electric hand amp comprisinga magneto havingupper and lower. ermanent magnetic legs which are curved su tantially concentric, an armature rotatable between the poles of said legs, and an incandescent lam mounted.on said legs .and connected in circuit with said armature. f l4f. An electric hand lamp compris' vmagneto havingV a' permanent horseoe magnet an armature rotatable betweentlie poles oi said magnet, anincandesoent lamp mounted on the magnet and connecte in circuit with said armature, and mea for operatingl said armature comprising a reciprocating trigger mounted on the magnet und operatively connected with the armature. 5. An electric hand lamp comprisin `a magneto having a permanent horseoe' magnet vconstructed in the form of a-pistol handle, the poles of said magnet being at the upper front end and the'cros's bar at` the lower rear end thereof, an 'armature rotatable between the poles of the magnet, and an incandescentlamp mounted on the magnet and connected in circuit with the armature. l

6.* An electrichand lamp compris' amagneto having a permanent horsey0e ina et having up r and low'er concentrical y curvedle t e poles of which are at the front ends t ereof, an armature rotatable between the (poles of said magnet, means `for mounted on t emagnet and connected poles by screws s* or other suitable rotating sai armature com rising a finger operated trigger arranged Jelow the lower leg of the in et, and an incandescent lamp l in cir-` cuit with said arinature.

7. An electric hand lamp comprisin a magneto having a permanent horseo e ma et having up er a'iid lower concentricalfyn curved legs tlie oles of which Vare at the front ends thereo an armature rotatable between the poles of said magnet, means for rotating said armature com rising a .finger operated trigger arranged lowthe lower leg of the magnet and a train of gearing arranged between the rear ends of said legs and inter osed between saidtrigger and armature, an an incandescent lamp mounted on the magnet and-connected in circuit with said armature.

8. An electric hand lamp comprisi a magneto havingn. permanent horseoe magnet constructed in the form of a pistol handle, the poles of said magnet being at the upper front end and the cross bar. atthe lower rear end thereof, an armature rotatable between the poles of the magnet, an incandescent lamp mounted on the magnetand connected in circuit with the armature `and sidepieces connecting the sides of 4said legs and inclosing the spacesbetween thel same. /V

'9.` electric hand lamp comprisin a magneto having a permanent. liorse-l oe ma et having up er and lower concentrical y curved legs t e oles of which are at the front ends thereof? an armature rotatable betweenthe poles of said magnet,m'eans for rotating said armature com rising a .finger operated trigger arranged vBelow the lower leg of the magneto and a train of gearing arranged between the rear ends of said legs and interposed between said trig r and i .armature-and side ieces connecting t e legs of the magnet and) y tween the saine, and an incandescent lamp mounted on the magnet and connected in circuit with said armature.

10. An electric hand lamp comprising a permanent magnet having two legsforming poles at their front ends while their rear ends are separated and form a space there# between an armature rotatable between the po es ofipthema et, an incandescentlam mounted onthel nt ends of said poles an connectedA in circuit with said armature, and means for operating said armature, and means for operating said armature comprisinclosing the space bea spring a trigger operatively connected with one en of the spring, and transmitting gearing interposed between thel opposite 'end of the spring and said armature. y

11.l An electric hand` 'lamp comprising a permanent magnet having two legs forming poles at theirfront ends while their rear ends are separated and form a" space therebetween an armature rotatable between the poles o the magnet, an incandescent lamp 130 means for o rating seid armature comprising s. s in spring arranged between the rear en s of themsgnet legs, s. tx'lger mounted on the msgnet,-s ratchet mec nism Ain between said trigger and one end of the splring and gearing interpsed between the other end of lsaid springend the armature; l

- 1o 9gitness myhand this 18th dsy'of April, 1

JOHN W. MEAD. Witnesses:

A. H. Dunno, Timo. L. Por?.

Referenced by
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US3366865 *Nov 14, 1966Jan 30, 1968Nuclear Materials & EquipmentPower generating apparatus including a thermal prime mover
US3573479 *Nov 17, 1967Apr 6, 1971Rieth Harold FGenerator flashlight
US6281594Jul 26, 1999Aug 28, 2001Ivan Marijan SarichHuman powered electrical generation system
US7009350Feb 10, 2005Mar 7, 2006Great Systems, Inc.Energy collection and storage system
US7205732Mar 6, 2006Apr 17, 2007Great Systems, Inc.Energy collection and storage system
US7851937 *May 31, 2007Dec 14, 2010Awa Micro Power Corporation LimitedWind-powered generator and assemblies therewith
US7893551 *Jul 29, 2008Feb 22, 2011Daniel TaiHand squeeze generator
US8142103Feb 20, 2009Mar 27, 2012Caterpillar Trimble Control Technologies LlcWireless sensor with kinetic energy power arrangement
US20130186802 *Jan 22, 2012Jul 25, 2013Yul WilliamsThermoTube: A Portable and Human-Powered Food Containment and Temperature Conditioning System
Cooperative ClassificationF21L13/06