US1591627A - Handlamp - Google Patents

Handlamp Download PDF

Info

Publication number
US1591627A
US1591627A US589391A US58939122A US1591627A US 1591627 A US1591627 A US 1591627A US 589391 A US589391 A US 589391A US 58939122 A US58939122 A US 58939122A US 1591627 A US1591627 A US 1591627A
Authority
US
United States
Prior art keywords
lamp
casing
battery
cell
contact surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US589391A
Inventor
Hopkins Nevil Monroe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAT CARBON CO Inc
NATIONAL CARBON COMPANY Inc
Original Assignee
NAT CARBON CO Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NAT CARBON CO Inc filed Critical NAT CARBON CO Inc
Priority to US589391A priority Critical patent/US1591627A/en
Application granted granted Critical
Publication of US1591627A publication Critical patent/US1591627A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00Electric lighting devices with self-contained electric batteries or cells
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L15/00Details of kinds solely applicable to the devices covered by groups F21L2/00 - F21L14/00
    • F21L15/06Details of kinds solely applicable to the devices covered by groups F21L2/00 - F21L14/00 concerned with the fitting

Description

July 6 1926.

N. M. HOPKINS HANDLAMP Filed Sept. 20, 1922 2 Sheets-Sheet 1 July 6 1926.

N. M. HOPKINS HANDLAMP Filed Sept. 20, 1322 2 Sheets-Sheet 2 Patented July 6, 1926.

UNITED STATES PATENT OFFICE.

HANDLAMP.

This invention relates to battery operated hand lamps and particularly to that type in whlch a head member, carrying a lamp bulb, is adjustable upon a tubular casing.

The principal object of the invention is to simplify the construction of such devices so far as is consistent with efiiciency and ease of IoIperation.

and lamps manufactured according to the preferred form of the present invention consist of an integral tubular casing having an apertured bottomof special form, a lamp-carrying head adjustable upon the casing, and resilient means between the lamp and a battery contained in the casing, the circuit, through the lamp being controlled by adjustment of the head. In the accompanying drawings:

Fig. 1 is a vertical section through the improved hand lamp, showing the battery cells in elevation;

Fi 2 is a similar view, showing a modified orm of resilient means;

Fig. 3 is a view similar to that of Fig. 2, the lamp being shown in operative position;

Fig. 4 is a vertical section through a hand lamp having a non-conductive casing; and

Fig. 5 is a perspective view of the conductor strip used in the device of Fig. 4.

Referring to Fig. 1 of the drawing, numeral 1 denotes a casing having a bottom 2 integral therewith. Casing 1 is preferably made from sheet brass or aluminum stamped or drawn into the desired shape, but the invention is not limited to casings made from these metals nor to any particular method of metal working. Aametallic head member 3, preferably shaped to form a reflective surface 4, is screw-threaded to engage cooperating threads at the upper portion of easing 1. A lamp bulb 5 is received by a threaded central socket 5- in reflector 4. A coil spring 6 is under compression between the base of the reflector and the top of battery cell 7. The s ring encircles'the carbon pole of that cell but 18 well spaced from it to prevent the possibilit of contact. The casing bottom 2 1s provi ed with an aperture 8 defined by an upstanding wall 9 having a relatively sharp edge presenting a substantially level support upon which the zinc base of cell 10 rests. The zinc cups of cells 7 and 10 are jacketed in paper or are otherwise suitably protected from contact with the casing wall. A fiber washer 11 may be placed on the top of cell 7 to prevent the possibility of the spring cutting into the seal or coming into contact with the zinc wall of the cell.

The circuit through the lamp 5- is closed and opened by screwing the head member 3 in and out, respectively. hen the head is turned outwardly from the position shown in Fig. 1, the inner terminal 12 of the lamp is moved out of contact with the carbon pole of cell 7, and this spaced relation is maintained by the action of spring 6. The thrust of the spring against the head member is sufiicient to insure its remaining in adjusted position.

One of the important advantages of the present construction is the means for making contact with the base of the lowest bat-- tery cell. The upturned sharp edge of wall 9 scores or abrades the zinc to a suflicient extent to insure clean metallic contact at all times, and the wall provides an integral path by which the current may pass to the casing. A permanent low-resistance connection is thus obtained in a very simple manner.

.A further advantage of the construction just described is that the aperture 8, formed by striking up the casing bottom to provide the contact wall 9, permits the easy ejection of the cells. If the cells become bound in the casing they may be readily displaced by inserting a rod, a pencil for example, through the aperture. Also, the top edge of the wall 9 supports the battery squarely in the casing, thereby reducin the tendency of the battery to fit obliquely in the casing and become bound therein.

In the form of the invention shown in Figs. 2 and 3, the construction difi'ers from Fig. 1 only in the substitution of a resilient. non-metallic member for the coil spring 6. The resilient member may be a rubber tube 13 placed between the reflector 4 and the top of cell 7. When the lamp is not in use, the tube 13 spaces the opposed lamp and battery terminals (Fig. 2). When the head member 3 is screwed inwardly to bring the lamp into operative position (Fig. 3), the

tube is compressed or bowed outwardly and exerts a pressure upon the head suflicient to hold it in adjusted position.

It is possible to dispense with resilient 1 members. The slight freedom of movement mice path from cell 10 to of the battery,

spring, are not sufficiently extensive to give" rise to destructive impact upon the lamp. However, the resilient members 6 and 13 have useful functions, as above pointed out, and will usually be employed.

Figs. 4 and 5 illustrate an embodiment of the invention in which a non-conductive casing 14 is used. A metallic strip 15 carries the current from cell 10 to the outer lamp terminal. The strip is bent at its ends to provide arms 16 and 17 extending at right angles to its body portion. Arm 16 passes through a slot 18 in the resilient tube 13, and has an upturned end 19 held by the tube against the metallic reflector socket 5. Arm 17 extends beneath cell 10 and is punched to provide the upstanding wall 20, upon which the zinc bottom of the cell rests. A clean zinc contact surface is maintained by engagement of the edge of wall 20 with the cell bottom, in the same way as in the devices of Figs. 1 and 2, and a low resistthe lamp is provided at all times. The strip 15 may be held in position by the cells and resilient tube 13 or may be secured to the casing in any suitable way.

I am aware that it has heretofore been proposed to construct flashlights with spring-pressed head members ad uStable to regulate the circuit through the lamp, and I claim this construction only in combination with the other advantageous features of the present invention. The devices illustrated herein are preferred forms capable of being modified with respect to various details of construction without de arting from the invention as defined in t e appended claims.

I claim 1. In a hand lamp, a casing containing 9.

battery provided with a contact surface, a closure for one end of said casing, an aperture in the closure for introducing a rod to eject the battery, and an upstanding member having a narrow marginal portion encircling said aperture and positioned between the closure and the contact surface, said upstanding member being in electrical connection with one terminal of the lamp.

2. In a hand lamp, a casing containing a battery provided with a contact surface, a closure for one end of said casing, an aper ture in the closure for introducing a rod to eject the battery, an upstanding member having a narrow marginal portion encircling said aperture and positioned between the closure and the contact surface, said upstanding member being in electrical connection with one terminal of the lamp, and resilient means arranged to press the con- Eact surface against said upstanding mem- 3. In a hand lamp, a casing containing a battery provided with a contact surface, a closure for one end of said casing and integral therewith, an aperture in the closure for introducing a rod to eject the bat tcry, said aperture having a raised marginal portion, and resilient means arranged to press the contact surface of the battery against said raised marginal portion.

4. In a hand lamp, a casing containing a battery provided with a contact surface, a closure for one end of the casing bearing an upstanding member in circuit with the lamp, said member having a sharp edged annular portion pressed against the contact surface of the battery, whereby the contact surface is abraded to insure good contact but the pressure against the contact surface is distributed to avoid rupturing the battery.

In testimony whereof, I afiix my signature.

N. MONROE HOPKINS.

US589391A 1922-09-20 1922-09-20 Handlamp Expired - Lifetime US1591627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US589391A US1591627A (en) 1922-09-20 1922-09-20 Handlamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US589391A US1591627A (en) 1922-09-20 1922-09-20 Handlamp

Publications (1)

Publication Number Publication Date
US1591627A true US1591627A (en) 1926-07-06

Family

ID=24357811

Family Applications (1)

Application Number Title Priority Date Filing Date
US589391A Expired - Lifetime US1591627A (en) 1922-09-20 1922-09-20 Handlamp

Country Status (1)

Country Link
US (1) US1591627A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518437A (en) * 1947-08-23 1950-08-15 Butler Brothers Flashlight
US2665498A (en) * 1950-06-24 1954-01-12 Edward C Mitchell Electro plumb bob
US4041304A (en) * 1976-01-22 1977-08-09 Samuel Spector Flashlight
US4473943A (en) * 1982-09-28 1984-10-02 Sotirios Papanikolaou Illuminated razor
US4725932A (en) * 1986-05-14 1988-02-16 Gammache Richard J Miniature flashlight
US4875146A (en) * 1985-08-21 1989-10-17 Duracell Inc. Flashlight bulb mounting
US6679616B2 (en) * 2000-05-22 2004-01-20 Mocap, Inc. Miniature flashlight and key chain
US20040190286A1 (en) * 2003-03-25 2004-09-30 Chapman Leonard T. Flashlight
US20040190299A1 (en) * 2003-03-25 2004-09-30 Chapman/Leonard Studio Equipment Flashlight
US20050099805A1 (en) * 2003-03-25 2005-05-12 Chapman/Leonard Enterprises, Inc. Flashlight
US6908209B2 (en) 2000-05-22 2005-06-21 Mocap, Inc. Miniature flashlight and keyholder
US20050174782A1 (en) * 2003-03-25 2005-08-11 Chapman Leonard T. Flashlight
US20060203476A1 (en) * 2003-03-25 2006-09-14 Chapman Leonard T Flashlight
US9909726B2 (en) 2013-12-12 2018-03-06 The Coleman Company, Inc. Battery life extender for portable lighting

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518437A (en) * 1947-08-23 1950-08-15 Butler Brothers Flashlight
US2665498A (en) * 1950-06-24 1954-01-12 Edward C Mitchell Electro plumb bob
US4041304A (en) * 1976-01-22 1977-08-09 Samuel Spector Flashlight
US4473943A (en) * 1982-09-28 1984-10-02 Sotirios Papanikolaou Illuminated razor
US4875146A (en) * 1985-08-21 1989-10-17 Duracell Inc. Flashlight bulb mounting
US4725932A (en) * 1986-05-14 1988-02-16 Gammache Richard J Miniature flashlight
US6679616B2 (en) * 2000-05-22 2004-01-20 Mocap, Inc. Miniature flashlight and key chain
US6908209B2 (en) 2000-05-22 2005-06-21 Mocap, Inc. Miniature flashlight and keyholder
US20050099805A1 (en) * 2003-03-25 2005-05-12 Chapman/Leonard Enterprises, Inc. Flashlight
US20050088843A1 (en) * 2003-03-25 2005-04-28 Chapman Leonard T. Flashlight
US20040190299A1 (en) * 2003-03-25 2004-09-30 Chapman/Leonard Studio Equipment Flashlight
US20040190286A1 (en) * 2003-03-25 2004-09-30 Chapman Leonard T. Flashlight
US20050174782A1 (en) * 2003-03-25 2005-08-11 Chapman Leonard T. Flashlight
US7083299B2 (en) 2003-03-25 2006-08-01 Chapman/Leonard Enterprises, Inc. Flashlight having convex-concave lens
US20060203476A1 (en) * 2003-03-25 2006-09-14 Chapman Leonard T Flashlight
US7147343B2 (en) 2003-03-25 2006-12-12 Chapman/Leonard Studio Equipment Flashlight
US7152995B2 (en) 2003-03-25 2006-12-26 Chapman/Leonard Enterprises, Inc. Flashlight
US7396141B2 (en) 2003-03-25 2008-07-08 Chapman/Leonard Enterprises, Inc. LED push rod flashlight
US9909726B2 (en) 2013-12-12 2018-03-06 The Coleman Company, Inc. Battery life extender for portable lighting
US10184620B2 (en) 2013-12-12 2019-01-22 The Coleman Company, Inc. Battery life extender for portable lighting

Similar Documents

Publication Publication Date Title
US3393312A (en) Adjustable flashlight
US2648762A (en) Combined housing and flexible flashlight support
US4122510A (en) Flashlight
US3579269A (en) Autoclavable power-pak seal
US2619559A (en) Line operated fishing switch
US3203131A (en) Self-propelled trolling device
US2695949A (en) Illuminated spirit level
US4458439A (en) Fishing float device
US2161872A (en) Electrical pocket writing and reading lamp
US4884355A (en) Fishing bobber with signal light
US4399495A (en) Flashlight
US1866600A (en) Pocket flash light
US3464139A (en) Illuminable fish attracting float
US4408263A (en) Disposable flashlight
US2785493A (en) Lighting attachment for fishing devices
US2261320A (en) Flashlight pencil
US1603272A (en) Focusing hand searchlight
US2272907A (en) Flashlight and battery unit therefor
US3092695A (en) Night light with swivel electrical connector
US3076891A (en) New plastic flashlight head
GB411218A (en) Improvements in or relating to electric torches, flash lamps and the like
US3105233A (en) Fish callers
US2811629A (en) Aquarium heating and indicating device
US2060406A (en) Tablet holder
US3671739A (en) Lamp assembly