CA1263914A - Trammel bar square - Google Patents
Trammel bar squareInfo
- Publication number
- CA1263914A CA1263914A CA000501653A CA501653A CA1263914A CA 1263914 A CA1263914 A CA 1263914A CA 000501653 A CA000501653 A CA 000501653A CA 501653 A CA501653 A CA 501653A CA 1263914 A CA1263914 A CA 1263914A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- bar
- frame contact
- vehicle
- members
- 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
Links
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- Body Structure For Vehicles (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus and method for producing a reference line perpendicular to the frame member of a vehicle for use in aligning the axles of the vehicle.
An apparatus and method for producing a reference line perpendicular to the frame member of a vehicle for use in aligning the axles of the vehicle.
Description
~ ~6 3 9~ ~ CASE 50-X
TRAMMEL BAR SQUARE
BACKGROUND OF THE INVENTION
_ Field of the Invention This invention relates to a means or providing reference S and more particularly to providing reference means adapted for use in the alignment of vehicle axles and wheels. Specifically, the instant invention relates to a reference means which is particularly adapted for use in conjunction with the alignment of truck and similar vehicle axles wherein it is necessary to establish a reference line perpendicular to the frame members of such vehicles. The instant invention provides a means for providing such a reference perpendicular to the frame members of the vehicle with respect to one or more of the side channels of said vehicle.
Description of the Prior Art Gage means are well known in the art as evidenced by U.S.
Patent No. 338,4~4 to Seargeant which discloses a combination tool which appears to be able to be used as a square means by providing a projecting member having a blade extending from and at right angles to a body member.
U.S. Patent No. 1,654,786 to Carstens discloses a butt gage which is particularly adapted for providing an adjustable and accurate means for defining the rectangular area to be worked upon and for efficiently guiding a workman's chisel or other instrument.
U.S. Patent No. 3,151,396 to Junkins relates to an apparatus for checking the condition of various parts of motor vehicles and specifically to a vehicle frame gage for detecting ,. `~
.
the location of the central longitudinal plane of certain types of vehicle ~rames.
U.5. Patent No. 3,417,479 to Hirmann relates to an improved meth~d and apparatus for checking the geometry of the undercarriage or chassis of motor vehicles.
,. :
U.S. Patent No. 4,366,624 to Bergstrom relates to an apparatus for measuring and checking vehicle bodies which comprises a bench with a co-acting measuring bridge.
U.S. Patent No. 4,413,42~ to Hoffman et al. relates to an apparatus for checking the geometry of a vehicle's frame and axle wherein the apparatus is comprised of a pointer bar assembly for use as a trammel and for checking toe measurements of teering axle tires and an adjustable square bar assembly for providing a reference line perpendicular to a vehicle's frame. The adjustable square bar assembly 30 o Hoffman consists of a straight bar member 31, hinge 32 at the center of its length'with a plurality of reference bar members 33 and 34 adapted to be slideably mounted on the straight bar member. In its preferred embodiment, the apparatus as shown in Figure 2 of the drawings is employed or checking the frame and axle-alignment of tractor frames. Figure S is a schematic view of the apparatus in its operative position for checking the geometry of a tractor with dual drive axles. The adjustable square har assembly 30 is extended across the front to rear members of the frame 40 of the tractor. The straight bar member 31 of the adjustable sguare bar assembly 30 is then locked in place perpendicular to the tractors frame members.
In addition, a ca,rpenter's square is often utili2.ed to align a bar disposed across the rame of a vehicle in order to provide a refer~nce line perpendicular to the frame members of the vehicle.
..
~3~
None of the art, h~wever, provides a means for providing a reference line perpendicular with respect to the fra~e members of a vehicle wherein the reference line is determined by a trammel bar square which is adapted to determine the reference line with respect to the flat outer surface of the channel members and is further adapted to facilitate the placement of the reference line notwithstanding the many obstructions ~uch as rivets, reinforcing members, suspension components and other auxiliary devices affixed to the truck frame members.
The instant invention overcomes these problems by providing a trammel bar square adapted to determine the locati~n of a refexence line perpendicular to the frame members of a vehicle wherein said reference line is determined with respect to the outer surface of the channel members of said vehicle frame and is constructed such that the interference caused by structural items associated with the frame members is minimized.
SUMMARY OF THE INVENTION
The present invention relates to a means for determining a line perpendicular to the frame members of a vehicle employing an apparatus for providing such reference line with respect to the outer flat surface of the frame channel wherein ade~uate clearance i8 provided for apparatus associated with the frame members such as rivets, structural members, etc.
_ Figure 1 is a simplified perspective view of the instant invention shown in use with a vehicle frame to provide a - reference line perpendicular to said vehicle frame as indicated by the bar shown in phantom.
~: Ei39~L~
.
Figure 2 is a cross sectional view of the instant invention taken along the lines 2-2 shown in Ei~ure 3.
Figur~ 3 is a front view of the instant invention.
Figure 4 is a simplified perspective view of an alternative embodiment.
DESCRIPTION OF AN EXEMPLARY EMBQDIMENT
Figure 1 of the drawings schematical.ly discloses the trammel bar s~uare 11 of the instant invention shown in use in conjunction with a reference bar 1~ (shown in phantom) which is disposed on vehicle frame 13.
In operation, the trammel bar square is employed to cause the reference bar 12 to be disposed on the vehicle frame 13 in : such a manner that the reference bar 12 is perpendicular with respect to the vehicle frame 13. The reference bar 12 then may be used to align the axles of the vehicle as disclosed in U.S.
Patent No. 4,800,651 which issued on January 31, 1989 in the name of William C. Hanlon for a Vehicle Alignment System~
: 20 Referring now to Figures 2 and 3 of the drawings, there are shown further details of the trammel bar 11 and its relationship with the vehicle frame 13. The vehicle frame 13 is comprised of a generally C-shaped channel member 14 which forms the main : structural element of the vehicle frame 13. Associated with the channel member 14 and rivetted thereto are associated : structural and mounting members such as that shown at 15 indicating a mounting plate:rivetted by rivet 16 to the upper ~: flange of the channel member 14. Similarly angle member 17 is also rivetted utilizing a rivet 16 to the base portion of the .
1: '~
;: ,. j,-. :
~:63~
channel member 14 to support a conduit 18 thereon.
Additionally, angle member 19 is also rivetted to the base of the channel member 14 by rivets 16 to increase the structural rigidity of the channel member 14.
It can thus be appreciated that a vehicle frame is essentially comprised of a pair of C-shaped channel members having a variety of associated structural and mounting elements associated with the c~annel member. Vehicles are generally fabricated using the outer surface 20 of the channel member 14 as a reference surface in order to fabricate the vehicle and mount vehicle structural elements to the channel members.
Therefore, the outer surface 20 of the channel member 14 is the only surface of the channel member 14 which may be utilized as a reference for the proper mounting of the axles and other fitructural features to t.he channel member 14.
Trammel bar 11 is adapted to coact with the outer surface 20 of the channel member 14 by allowing a contact between frame contact member 22 of trammel bar 11 and the outer surface 20 of the channel member 14. Slideably engaging the frame contact member 22 is angle slide member 23 which is slideably retained with respect to the frame contact member 22 by carriage bolt 24 which is retai~ed in the frame contact member 22 through a square hole in said member which coacts with the s~uare collar of the carriage bolt 24 to fixedly retain the carriage bolt 24 with respect to the frame contact member 22 and further does not allow the rotation of the carriage~bolt 24 with respect to the frame contact member 22. The carriage bolt 24 engages slot 25 (See Figure 1) in the angle slide member 23. The angle slide member 23 is retained on the frame contact member 22 by bolt 24 which may be selectively loosened to allow the angle slide member 23 to be slideably displaced with respect to frame contact member 22 as the carriage bolt 24 slides within the 3~
~lot 25. Guide ways 30 may be employed to align the angle slide member 22 with r~spect to the angle slide member 23.
It may thus be appreciated that there i~> provided a mean~
for selectively temporarily affixing the slide member 23 at various locations along the frame contact member 22 by selectively tightening and loosening the nut 26 on the carriage bolt 24. Fixedly attached to the angle slicle member 23 is reference bar retaining means 27. The reference bar retaining means 27 is rigidly affixed to the slide angle member 23 and is perpendicular to the longitudinal axis thereof.
Preferably the reference bar retaining means is comprised of a section of square tubing adapted to receive the reference bar as discussed below. Affixed to the side of the reference bar retaining means 27 opposite the angle slide member 23 is collar 28 which has a threaded opening therein adapted to receive threaded thumb screw 29. The thumb screw 29 is adapted to engage the threads of the collar 28 and protrude through a hole in the reference bar retaining means 27 wherein the thumb screw 29 may be selectively caused to engage the reference bar as discussed below for retaining the reference bar with respect to the reference bar retaining means 27.
Disposed within the reference bar retaining means 27 is reference bar 31. In the exemplary embodiment, the reference bar 31 is comprised of a piece of square tubing having a lower portion 32 adapted to be received by the reference bar retaining means 27 and held with~respect to the reference bar retaining means 27 by thumb screw 29 coacting with threaded collar 28.
: Afixed at right angles to the lower portion 32 i~ upper portion 33 which is adapted to extend above and over the frame 13. It will be appreciated by one skilled in the art that the re~erence bar 31 may be temporarily retained within the ~, .
~'~63~
retaining means 27 at various positions through the use of thumb screw 29.
In operation the frame contact member 22 is manually or optionally temporarily clamped to the outer surface 20 of the channel member 14. The angle slide member .23 is retained by carriage bolt 24 in a position parallel to the framecontact member 22 and thus parallel to the outer surface 20 of the channel member 14. Similarly the referenc~ bar retaining means 27 has one face thereof parallel to the angle sl~de member 23 and thus similarly parallel to the outer su:rface 20 of the channel member 14. One surface of the lower portion 32 of the reference bar 31 is caused to be disposed and biased aqainst one face of the reference bar retaining means 27 by thumb screw 29 to thereby cause the surface of the reference bar 31 to similarly assume a position parallel to the outer surface 20 of the channel member 14. Since the upper portion 33 of the reference bar 31 is at right angles with respect to the inner surace 34 of the reference bar 31, the upper ~ortion of the reference bar 31 is thus at a right angle with respect to the outer surface 20 of the channel member 14. A reference bar 12 may be used in conjunction with the upper portion 33 of the reference bar 31 to provide a reference perpendicular to the outer surface 20 of the channel member 14.
It will be readily appreciated by-one skilled in the art that the trammel bar 11 is particularly adaptable for use in connection with frames having various ætructural elements affixed thereto wherein the angle slide member 23 may be displaced with respect to the frame contact member 22 to afford use of the trammel bar 11 in a location having structural members associated with such location and further the reference bar 31 may also be displaced with respect to the reference bar retaining means 27 in order to similarly allow the trammel bar 39~
ll to be used in conjunction with a frame having structural members and other obstructions associated therewith.
Referring now to Figure 4 of the drawings there is shown an alternative embodiment of the instant invention inçorporating a structure similar to that shown in Figure 1 of the drawings and incorporating the same reference numerals for like parts. In addition to the structure disclosed in Figure 1 of the drawings, the embodiment of Figure 4 further disçloses the use of set off blocks 41 which may be affixed to.the frame contact member 22.
The set off blocks 41 are both of equal dimension and cause the frame contact member 22 to be displaced away from the outer surface 20 of the channel member 14 while causing the frame contact member to be parallel with the outer surface 20 due to the like dimensions of the set off blocks 41. It may be appreciated by one skilled ir the art that the set off blocks 41 may be movably mountable with respect to the frame contact member 22 in a manner similar to that employed for mounting the angle slide member 23 with resp6ct to the frame contact member 22 to thereby afford a means for selectively positioning the set off blocks 41 alon~ the frame contact member 22 in order to allow the trammel bar 11 to be used in a location having structural elements such as rivet 16 protruding from the outer surface 20 of the channel member 14. By selective placement of the set off bloc~s 41 with respect to the locations between the rivets, the frame contact member 22 may be caused to assume a position parallel to the outer surface 20 of the channel r.lember 14 and employed in a manner discussed above in order to provide a reference perpendicular to the outer surface 20 of channel member 14 of frame 13 to aid in the alignment of the axle andjor structural elements of the vehicle.
There is thus provided a means for allowing a reference member to be placed parallel to the outer surface 20 of the channel member 14, which member is subseguently used to provide ~,, - ~ -i3~
a second reference which is perpendicular to the outer surface 20 of the channel member 14 wherein the means for providing ~uch reference surfaces are adjustable in ~rder to allow their use in conjunction with a frame 13 having obstructions associated therewith.
It will be apparent to those skill~d in the art that various modifications and additions may be made in the instant i~vention without departing from the essential features thereof which are intended to be defined and secured by the appended 1~ claims.
TRAMMEL BAR SQUARE
BACKGROUND OF THE INVENTION
_ Field of the Invention This invention relates to a means or providing reference S and more particularly to providing reference means adapted for use in the alignment of vehicle axles and wheels. Specifically, the instant invention relates to a reference means which is particularly adapted for use in conjunction with the alignment of truck and similar vehicle axles wherein it is necessary to establish a reference line perpendicular to the frame members of such vehicles. The instant invention provides a means for providing such a reference perpendicular to the frame members of the vehicle with respect to one or more of the side channels of said vehicle.
Description of the Prior Art Gage means are well known in the art as evidenced by U.S.
Patent No. 338,4~4 to Seargeant which discloses a combination tool which appears to be able to be used as a square means by providing a projecting member having a blade extending from and at right angles to a body member.
U.S. Patent No. 1,654,786 to Carstens discloses a butt gage which is particularly adapted for providing an adjustable and accurate means for defining the rectangular area to be worked upon and for efficiently guiding a workman's chisel or other instrument.
U.S. Patent No. 3,151,396 to Junkins relates to an apparatus for checking the condition of various parts of motor vehicles and specifically to a vehicle frame gage for detecting ,. `~
.
the location of the central longitudinal plane of certain types of vehicle ~rames.
U.5. Patent No. 3,417,479 to Hirmann relates to an improved meth~d and apparatus for checking the geometry of the undercarriage or chassis of motor vehicles.
,. :
U.S. Patent No. 4,366,624 to Bergstrom relates to an apparatus for measuring and checking vehicle bodies which comprises a bench with a co-acting measuring bridge.
U.S. Patent No. 4,413,42~ to Hoffman et al. relates to an apparatus for checking the geometry of a vehicle's frame and axle wherein the apparatus is comprised of a pointer bar assembly for use as a trammel and for checking toe measurements of teering axle tires and an adjustable square bar assembly for providing a reference line perpendicular to a vehicle's frame. The adjustable square bar assembly 30 o Hoffman consists of a straight bar member 31, hinge 32 at the center of its length'with a plurality of reference bar members 33 and 34 adapted to be slideably mounted on the straight bar member. In its preferred embodiment, the apparatus as shown in Figure 2 of the drawings is employed or checking the frame and axle-alignment of tractor frames. Figure S is a schematic view of the apparatus in its operative position for checking the geometry of a tractor with dual drive axles. The adjustable square har assembly 30 is extended across the front to rear members of the frame 40 of the tractor. The straight bar member 31 of the adjustable sguare bar assembly 30 is then locked in place perpendicular to the tractors frame members.
In addition, a ca,rpenter's square is often utili2.ed to align a bar disposed across the rame of a vehicle in order to provide a refer~nce line perpendicular to the frame members of the vehicle.
..
~3~
None of the art, h~wever, provides a means for providing a reference line perpendicular with respect to the fra~e members of a vehicle wherein the reference line is determined by a trammel bar square which is adapted to determine the reference line with respect to the flat outer surface of the channel members and is further adapted to facilitate the placement of the reference line notwithstanding the many obstructions ~uch as rivets, reinforcing members, suspension components and other auxiliary devices affixed to the truck frame members.
The instant invention overcomes these problems by providing a trammel bar square adapted to determine the locati~n of a refexence line perpendicular to the frame members of a vehicle wherein said reference line is determined with respect to the outer surface of the channel members of said vehicle frame and is constructed such that the interference caused by structural items associated with the frame members is minimized.
SUMMARY OF THE INVENTION
The present invention relates to a means for determining a line perpendicular to the frame members of a vehicle employing an apparatus for providing such reference line with respect to the outer flat surface of the frame channel wherein ade~uate clearance i8 provided for apparatus associated with the frame members such as rivets, structural members, etc.
_ Figure 1 is a simplified perspective view of the instant invention shown in use with a vehicle frame to provide a - reference line perpendicular to said vehicle frame as indicated by the bar shown in phantom.
~: Ei39~L~
.
Figure 2 is a cross sectional view of the instant invention taken along the lines 2-2 shown in Ei~ure 3.
Figur~ 3 is a front view of the instant invention.
Figure 4 is a simplified perspective view of an alternative embodiment.
DESCRIPTION OF AN EXEMPLARY EMBQDIMENT
Figure 1 of the drawings schematical.ly discloses the trammel bar s~uare 11 of the instant invention shown in use in conjunction with a reference bar 1~ (shown in phantom) which is disposed on vehicle frame 13.
In operation, the trammel bar square is employed to cause the reference bar 12 to be disposed on the vehicle frame 13 in : such a manner that the reference bar 12 is perpendicular with respect to the vehicle frame 13. The reference bar 12 then may be used to align the axles of the vehicle as disclosed in U.S.
Patent No. 4,800,651 which issued on January 31, 1989 in the name of William C. Hanlon for a Vehicle Alignment System~
: 20 Referring now to Figures 2 and 3 of the drawings, there are shown further details of the trammel bar 11 and its relationship with the vehicle frame 13. The vehicle frame 13 is comprised of a generally C-shaped channel member 14 which forms the main : structural element of the vehicle frame 13. Associated with the channel member 14 and rivetted thereto are associated : structural and mounting members such as that shown at 15 indicating a mounting plate:rivetted by rivet 16 to the upper ~: flange of the channel member 14. Similarly angle member 17 is also rivetted utilizing a rivet 16 to the base portion of the .
1: '~
;: ,. j,-. :
~:63~
channel member 14 to support a conduit 18 thereon.
Additionally, angle member 19 is also rivetted to the base of the channel member 14 by rivets 16 to increase the structural rigidity of the channel member 14.
It can thus be appreciated that a vehicle frame is essentially comprised of a pair of C-shaped channel members having a variety of associated structural and mounting elements associated with the c~annel member. Vehicles are generally fabricated using the outer surface 20 of the channel member 14 as a reference surface in order to fabricate the vehicle and mount vehicle structural elements to the channel members.
Therefore, the outer surface 20 of the channel member 14 is the only surface of the channel member 14 which may be utilized as a reference for the proper mounting of the axles and other fitructural features to t.he channel member 14.
Trammel bar 11 is adapted to coact with the outer surface 20 of the channel member 14 by allowing a contact between frame contact member 22 of trammel bar 11 and the outer surface 20 of the channel member 14. Slideably engaging the frame contact member 22 is angle slide member 23 which is slideably retained with respect to the frame contact member 22 by carriage bolt 24 which is retai~ed in the frame contact member 22 through a square hole in said member which coacts with the s~uare collar of the carriage bolt 24 to fixedly retain the carriage bolt 24 with respect to the frame contact member 22 and further does not allow the rotation of the carriage~bolt 24 with respect to the frame contact member 22. The carriage bolt 24 engages slot 25 (See Figure 1) in the angle slide member 23. The angle slide member 23 is retained on the frame contact member 22 by bolt 24 which may be selectively loosened to allow the angle slide member 23 to be slideably displaced with respect to frame contact member 22 as the carriage bolt 24 slides within the 3~
~lot 25. Guide ways 30 may be employed to align the angle slide member 22 with r~spect to the angle slide member 23.
It may thus be appreciated that there i~> provided a mean~
for selectively temporarily affixing the slide member 23 at various locations along the frame contact member 22 by selectively tightening and loosening the nut 26 on the carriage bolt 24. Fixedly attached to the angle slicle member 23 is reference bar retaining means 27. The reference bar retaining means 27 is rigidly affixed to the slide angle member 23 and is perpendicular to the longitudinal axis thereof.
Preferably the reference bar retaining means is comprised of a section of square tubing adapted to receive the reference bar as discussed below. Affixed to the side of the reference bar retaining means 27 opposite the angle slide member 23 is collar 28 which has a threaded opening therein adapted to receive threaded thumb screw 29. The thumb screw 29 is adapted to engage the threads of the collar 28 and protrude through a hole in the reference bar retaining means 27 wherein the thumb screw 29 may be selectively caused to engage the reference bar as discussed below for retaining the reference bar with respect to the reference bar retaining means 27.
Disposed within the reference bar retaining means 27 is reference bar 31. In the exemplary embodiment, the reference bar 31 is comprised of a piece of square tubing having a lower portion 32 adapted to be received by the reference bar retaining means 27 and held with~respect to the reference bar retaining means 27 by thumb screw 29 coacting with threaded collar 28.
: Afixed at right angles to the lower portion 32 i~ upper portion 33 which is adapted to extend above and over the frame 13. It will be appreciated by one skilled in the art that the re~erence bar 31 may be temporarily retained within the ~, .
~'~63~
retaining means 27 at various positions through the use of thumb screw 29.
In operation the frame contact member 22 is manually or optionally temporarily clamped to the outer surface 20 of the channel member 14. The angle slide member .23 is retained by carriage bolt 24 in a position parallel to the framecontact member 22 and thus parallel to the outer surface 20 of the channel member 14. Similarly the referenc~ bar retaining means 27 has one face thereof parallel to the angle sl~de member 23 and thus similarly parallel to the outer su:rface 20 of the channel member 14. One surface of the lower portion 32 of the reference bar 31 is caused to be disposed and biased aqainst one face of the reference bar retaining means 27 by thumb screw 29 to thereby cause the surface of the reference bar 31 to similarly assume a position parallel to the outer surface 20 of the channel member 14. Since the upper portion 33 of the reference bar 31 is at right angles with respect to the inner surace 34 of the reference bar 31, the upper ~ortion of the reference bar 31 is thus at a right angle with respect to the outer surface 20 of the channel member 14. A reference bar 12 may be used in conjunction with the upper portion 33 of the reference bar 31 to provide a reference perpendicular to the outer surface 20 of the channel member 14.
It will be readily appreciated by-one skilled in the art that the trammel bar 11 is particularly adaptable for use in connection with frames having various ætructural elements affixed thereto wherein the angle slide member 23 may be displaced with respect to the frame contact member 22 to afford use of the trammel bar 11 in a location having structural members associated with such location and further the reference bar 31 may also be displaced with respect to the reference bar retaining means 27 in order to similarly allow the trammel bar 39~
ll to be used in conjunction with a frame having structural members and other obstructions associated therewith.
Referring now to Figure 4 of the drawings there is shown an alternative embodiment of the instant invention inçorporating a structure similar to that shown in Figure 1 of the drawings and incorporating the same reference numerals for like parts. In addition to the structure disclosed in Figure 1 of the drawings, the embodiment of Figure 4 further disçloses the use of set off blocks 41 which may be affixed to.the frame contact member 22.
The set off blocks 41 are both of equal dimension and cause the frame contact member 22 to be displaced away from the outer surface 20 of the channel member 14 while causing the frame contact member to be parallel with the outer surface 20 due to the like dimensions of the set off blocks 41. It may be appreciated by one skilled ir the art that the set off blocks 41 may be movably mountable with respect to the frame contact member 22 in a manner similar to that employed for mounting the angle slide member 23 with resp6ct to the frame contact member 22 to thereby afford a means for selectively positioning the set off blocks 41 alon~ the frame contact member 22 in order to allow the trammel bar 11 to be used in a location having structural elements such as rivet 16 protruding from the outer surface 20 of the channel member 14. By selective placement of the set off bloc~s 41 with respect to the locations between the rivets, the frame contact member 22 may be caused to assume a position parallel to the outer surface 20 of the channel r.lember 14 and employed in a manner discussed above in order to provide a reference perpendicular to the outer surface 20 of channel member 14 of frame 13 to aid in the alignment of the axle andjor structural elements of the vehicle.
There is thus provided a means for allowing a reference member to be placed parallel to the outer surface 20 of the channel member 14, which member is subseguently used to provide ~,, - ~ -i3~
a second reference which is perpendicular to the outer surface 20 of the channel member 14 wherein the means for providing ~uch reference surfaces are adjustable in ~rder to allow their use in conjunction with a frame 13 having obstructions associated therewith.
It will be apparent to those skill~d in the art that various modifications and additions may be made in the instant i~vention without departing from the essential features thereof which are intended to be defined and secured by the appended 1~ claims.
Claims (5)
1. A portable apparatus for providing a reference line perpendicular to a frame member of a vehicle comprised of:
(a) frame contact means adapted to be affixed to and contact the outer surface of said frame members with a frame contact surface wherein at least one surface of said frame contact means is perpendicular to at least one of said frame members;
(b) reference means affixed to said frame contact means wherein at least one surface of said reference means is perpendicular to said frame contact surface of said frame contact means wherein said frame contact surface is not coincident with said perpendicular surface of said reference means.
(a) frame contact means adapted to be affixed to and contact the outer surface of said frame members with a frame contact surface wherein at least one surface of said frame contact means is perpendicular to at least one of said frame members;
(b) reference means affixed to said frame contact means wherein at least one surface of said reference means is perpendicular to said frame contact surface of said frame contact means wherein said frame contact surface is not coincident with said perpendicular surface of said reference means.
2. The apparatus of Claim 1 wherein said reference means is removably affixed to said frame contact means.
3. The apparatus of Claim 2 wherein the reference means may be removably affixed to said frame contact means at a plurality of locations along the axis of said frame contact means.
4. The apparatus of Claim 2 wherein the perpendicular surface of said reference means may be removably affixed to said frame contact means at a plurality of positions in which the distance between said perpendicular surface and said frame contact surface varies.
5. The apparatus of Claim 1 wherein said frame contact means is adapted to contact the outer surface of said frame members with a frame contact surface having two separated contact points.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72340585A | 1985-04-15 | 1985-04-15 | |
| US723,405 | 1991-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1263914A true CA1263914A (en) | 1989-12-19 |
Family
ID=24906119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000501653A Expired CA1263914A (en) | 1985-04-15 | 1986-02-12 | Trammel bar square |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1263914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6272759B1 (en) * | 1999-04-12 | 2001-08-14 | Amsted Industries Incorporated | Sideframe wheelbase gauge |
-
1986
- 1986-02-12 CA CA000501653A patent/CA1263914A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6272759B1 (en) * | 1999-04-12 | 2001-08-14 | Amsted Industries Incorporated | Sideframe wheelbase gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |