Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3780614 A
Publication typeGrant
Publication dateDec 25, 1973
Filing dateFeb 5, 1973
Priority dateFeb 5, 1973
Publication numberUS 3780614 A, US 3780614A, US-A-3780614, US3780614 A, US3780614A
InventorsMaier H
Original AssigneeAmerican Optical Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Multiple bullet and cartridge mount for forensic microscope
US 3780614 A
Abstract
A multiple bullet and cartridge holder for use with a forensic microscope has a carriage with a plurality of conventional mounts for bullets and provides rapid interchangability of specimens for examination, improved indexing and improved manipulation.
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

atent 1 Dec. 25, 1973 MULTIPLE BULLET AND CARTRIDGE MOUNT FOR FORENSIC MICROSCOPE Howard A. Maier, Williamsville,

American Optical Corporation, Southbridge, Mass.

Filed: Feb. 5, 1973 Appl. No.: 329,794

Inventor:

Assignee:

11.8. CI. 86/1 R, 73/167, 89/34 Int. Cl C06b 21/02 Field of Search 73/167; 89/34; 86/1 [56] References Cited UNlTED STATES PATENTS 3,680,966 8/1972 Cofek et al. 73/167 X Primary Examiner-Stephen J. Lechert, .1 r. Attorney-W. C. Nealon et a1.

[57] ABSTRACT A multiple bullet and cartridge holder for use with a forensic microscope has a carriage with a plurality of conventional mounts for bullets and provides rapid interchangability of specimens for examination, improved indexing and improved manipulation.

3 Claims, 6 Drawing Figures PATENTEDHECZSBIS 3.780.614

FIG.4 FIG.5 FIG.6

MULTIPLE BULLET AND CARTRIDGE MOUNT FOR FORENSIC MICROSCOPE.

BACKGROUND OF THE INVENTION The present invention relates to bullet and cartridge holders for forensic microscopes. More particularly, the present invention relates to a bullet and cartridge holder having a carriage carrying a plurality of conventional bullet mounts which provides for a rapid change from one specimen to another or rapid change of carriages without disturbance of the focus, stage or the like.

Conventional bullet holders have been carried by mounts which are in turn fastened to the microscope stage and are adapted to carry a single bullet holder. Conventional mounts for bullets are usually cylinderical and have either a generally conical or generally hemispherical recess in one end. Bullets for examination are temporarily joined to the mount by an adhesive. The bullet and holder are then attached to the mount at the other end. Conventional mounts generally have some means to rotate the bullets about their longitudinal axis in order that the entire peripheral surface of the bullet may be examined and the mounts are usually releasably connected to the microscope stage by a frame. The frame and mount cooperate to permit angular adjustment of the axis of rotation with respect to the optical axis of the microscope.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially sectional side view of body and carriage assembly according to the present invention.

FIG. 2 is a perspective view of the body assembly, with the carriage removed, mounted on a conventional forensic bullet holder attachment.

FIG. 3 is similar to FIG. 2 with the carriage and bullet holders in position.

FIG. 4 is an enlarged side view of the pin retaining screw.

FIGS. 5 and 6 are enlarged side and end views, respectively, of the blade end of the shaft.

DETAILED DESCRIPTION OF THE-INVENTION Referring to FIG. 1, rectangular body 1 has mounting ball 2 secured to the bottom side thereof and one corner machined off to provide a face 3 at an angle of 45 to the end and top faces. The 45 face 3 has a recess 6 located therein which is adapted to hold demountable carrier 5 by pivot 4 and permit rotation of carrier 5 with pivot 4. The carrier has a peripheral flange 7 secured thereto at an angle of 45 and flange 7 has a plurality of slotted pins 8 rotatably mounted therein and retained by slotted head screws 9. Slotted pins 8 are arranged in flange 7 to permit axial alignment of a selected slotted pin with retractable shaft 10 by manual rotation of carrier 5. Shaft 10 is slidably and rotatably mounted in a generally horizontal hole 11 in the body. A collar 12 on shaft 10 is adapted to rest in the normal position against the end of passage 13 and the collar is located to permit blade 14 on the end of shaft 10 to engage recess 23 in the head of one of screws 9 when in axial alignment with the shaft. Spring 15 urges collar 12 toward its normal position against end of passage 13 and the spring is maintained under compression by externally threaded ring 16. The end of shaft 10 opposite blade 14 extends beyond the body and has knob 17 se- LII cured thereto to assist an operator in retracting or rotating the shaft.

The angle between the pivotal axis of carriage 5 and rotatable axis of one of pins 8 and shaft 10 enables the engagement of shaft 10 with one of screws 9 to releasably attach the carriage to body 1. Manual retraction of shaft 10 disengages blade 14 from the recess of screw 9 and permits the operator to exchange carriages or rotate the carriage 5 for examination of a different bullet. The taper of blade 14 and recess 23 cooperate to accurately position the carriage and selected bullet holder eliminating or significantly reducing the necessity to refocus or re-position each time specimens are changed. Shaft 10 can be manually rotated by means of knob 17 and its engagement with screw 9, causes pin 8 and its respective bullet mount to rotate therewith to permit selection of the peripheral area of the specimen bullet within the microscope field.

FIG. 2 shows body 1, with carrier 5 removed, supported by ball 2 which is retained by clamping member 18 against conventional base 19.

FIG. 3 shows carrier 5 positioned on the body and a bullet mount 20 fitted on each of slotted pins 8. Mirror 21 is attached to arm 22 and adapted to rotate to assist in directing a uniform intensity of light on the bullet (not shown) under examination.

FIG. 4 shows the recess 23 of one of slotted head screws 9 in detail.

FIGS. 5 and 6 show the blade portion of the shaft in greater detail.

What is claimed is:

1. A multiple bullet holder comprising a body, a rotatable carrier releasably connected to said body, a plurality of bullet holders rotatably connected to said carrier, manually rotatably, manually retractable means adapted to rotate a selected bullet holder, position (index) said carrier and releasably hold said carrier connected to said body.

2. A multiple bullet holder according to claim 1 further comprising a plurality of pivot means extending through said carrier, each of said plurality of pivot means being adapted to carry one of said bullet holders and having a recess adapted to cooperate with said manually retractable means.

3. A multiple bullet holder comprising a body, said body having a horizontal journal opening extending therethrough and a cylindrical recess therein, said cylindrical recess having a longitudinal axis intersecting the axis of said journal at an angle of 45, a manually rotatably, axially slidable means extending through said journal, said axially slidable means having a blade at one end, a spring adapted to normally extend the blade of said axially slidable means, a carrier having a pivot adapted to be seated in said cylindrical recess and being manually rotatable about an axis, a plurality of journal openings radially spaced about said carrier, each of said journal openings having a longitudinal axis intersecting the axis of rotation of said carrier at an angle of 45, a plurality of members, each rotatably mounted in one of said journal openings, each of said members having one end adapted to be selectively engaged with said blade and being positioned to permit selective axial alignment with said axially slidable means.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3680966 *Mar 12, 1971Aug 1, 1972Iris CorpApparatus and method for shell inspection
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5390108 *May 24, 1991Feb 14, 1995Forensic Technology Wai Inc.Computer automated bullet analysis apparatus
US5654801 *Jan 3, 1995Aug 5, 1997Forensic Technology Wai Inc.Fired cartridge examination method and imaging apparatus
US5659489 *Dec 29, 1994Aug 19, 1997Forensic Technology Wai Inc.Method and apparatus for obtaining a signature from a fired bullet
US6018394 *Apr 17, 1998Jan 25, 2000Forensic Technologies Wai Inc.Apparatus and method for imaging fired ammunition
US6219437 *Aug 18, 1997Apr 17, 2001Forensic Technology Wai Inc.Method and apparatus for obtaining a signature from a fired bullet
US6327032Mar 31, 1998Dec 4, 2001Forensic Technology (Wai) Inc.Method and apparatus for imaging a cartridge case ejector markings
USRE37392Jun 14, 1999Sep 25, 2001Forensic Technology Wai Inc.Fired cartridge examination method and imaging apparatus
WO1996021137A1 *Jan 2, 1996Jul 11, 1996Roman BaldurFired cartridge examination method and imaging apparatus
WO1999014553A1 *Sep 15, 1998Mar 25, 1999Boudreau YvanA method and apparatus for imaging a cartridge case ejector markings
Classifications
U.S. Classification86/1.1, 73/167, 89/34
International ClassificationG02B21/34, F42B35/00
Cooperative ClassificationG02B21/34, F42B35/00
European ClassificationF42B35/00, G02B21/34
Legal Events
DateCodeEventDescription
May 16, 1988ASAssignment
Owner name: CAMBRIDGE INSTRUMENTS INC., A DE CORP.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WARNER LAMBERT TECHNOLOGIES, INC.;REEL/FRAME:004893/0097
Effective date: 19880407
May 20, 1982ASAssignment
Owner name: WARNER LAMBERT COMPANY, 201 TABOR ROAD, MORRIS PLA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN OPTICAL CORPORATION,;REEL/FRAME:004034/0681
Effective date: 19820513
Owner name: WARNER LAMBERT TECHNOLOGIES, INC.; 6373 STEMMONS F
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WARNER LAMBERT COMPANY;REEL/FRAME:004034/0700
Effective date: 19820514