← Back to Patent Explorer
US3783518A Expired / Lapsed US ⏱️ 0.0 years remaining

Carpenter{40 s tool

Assignee: Individual
•
Filing: 1971-05-10
•
Granted: 1974-01-08
•
Expires: 1991-05-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A new and improved carpenter''s tool has been designed which will measure pitches or angles in carpenter''s work with speed and ease. This tool also contains a mechanism which will lock the tool in a rigid position simply and quickly. This tool comprises a first leg member having two elements at one end forming a slot; a second leg member pivotably mounted between the shoulders of the first leg member and having a blade element adapted for insertion into the slot of the first leg member; a locking sleeve joining the two leg members at the pivot point, said locking sleeve being right-hand threaded at one end and left-hand threaded at the other end; and a locking lever slidably mounted through the first and second leg member and through the locking sleeve such that a turn of the lever from either side of the tool will cause the shoulder elements of the first leg member to bind down against the blade element of the second leg member locking the leg members into a rigid position. The tool also can contain a first sliding member mounted perpendicular to and slidably connected to the side of the first leg member and a second slidably member slidably connected to the side of the second leg member said second sliding members being spring pivotably connected to the first sliding member. These slidably mounted members enable an angle measured by the two leg members to be extended beyond the pivot point connecting the first and second leg members.

Inventors

  • 👤 R Jones

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:15
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/56; G01B3/566

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 243 words
An adjustable carpenter''s tool comprising: a. a first leg member having two shoulder elements at one end forming a slot and further having a right hand threaded opening in one shoulder and a left hand threaded opening in the other shoulder, said openings adapted to receive a threaded locking sleeve; b. a second leg member pivotably mounted between the shoulders of the first leg member and having a blade element adapted for insertion into the slot of the first leg member, said blade also having an unthreaded opening adapted to receive an unthreaded portion of a locking sleeve; c. a locking sleeve joining the two leg members at the pivot point, said locking sleeve being right-hand threaded at one end corresponding to the right hand threaded opening in one shoulder of the first leg member and left-haNd threaded at the other end corresponding to the left hand threaded opening in the other shoulder of the first leg member and unthreaded between said right-hand and left-hand threaded portions; and d. a locking shaft having a lever on either end and slidably mounted through the first and second leg members and through the locking sleeve and in meshing engagement with the locking sleeve such that a turn of a lever from either side of the tool will cause the shoulder elements of the first leg member to bind against the blade element of the second leg member, locking the leg members into a rigid position.
Claim 2
Dependent Claim 243 words
An adjustable carpenter''s tool comprising: a. a first leg member having two shoulder elements at one end forming a slot and further having a right hand threaded opening in one shoulder and a left hand threaded opening in the other shoulder, said openings adapted to receive a threaded locking sleeve; b. a second leg member pivotably mounted between the shoulders of the first leg member and having a blade element adapted for insertion into the slot of the first leg member, said blade also having an unthreaded opening adapted to receive an unthreaded portion of a locking sleeve; c. a locking sleeve joining the two leg members at the pivot point, said locking sleeve being right-hand threaded at one end corresponding to the right hand threaded opening in one shoulder of the first leg member and left-haNd threaded at the other end corresponding to the left hand threaded opening in the other shoulder of the first leg member and unthreaded between said right-hand and left-hand threaded portions; and d. a locking shaft having a lever on either end and slidably mounted through the first and second leg members and through the locking sleeve and in meshing engagement with the locking sleeve such that a turn of a lever from either side of the tool will cause the shoulder elements of the first leg member to bind against the blade element of the second leg member, locking the leg members into a rigid position.
Claim 3
Dependent Claim 51 words
An adjustable carpenter''s tool as in claim 1 which contains in addition: a. a first sliding member slidably connected to the side of the first leg member; and b. a second sliding member slidably connected to the side of the second leg member and pivotably connected to the first sliding member.
Claim 4
Dependent Claim 25 words
An adjustable carpenter''s tool as in claim 2 wherein the second sliding member extends above and below the horizontal plane of the second leg member.
Claim 5
Dependent Claim 28 words
An adjustable carpenter''s tool as in claim 1 wherein the second leg member contains a mark observation slot running along the longitudinal axis of said second leg member.
Claim 6
Dependent Claim 24 words
An adjustable carpenter''s tool as in claim 4 wherein the second leg member contains mark observation point at a convenient point along its length.
Claim 7
Dependent Claim 61 words
An adjustable carpenter''s tool as in claim 5 which contains in addition a spring-mounted lock pin located in the mark observation slot and running through the side of the second leg member and wherein the second sliding member contains an aperture to engage said spring mounted lock pin at a point where both legs of the tool form a 90* angle.
Claim 8
Dependent Claim 20 words
An adjustable carpenter''s tool as in claim 6 which contains in addition levelling bubbles located in the first leg member.
Claim 9
Dependent Claim 20 words
An adjustable carpenter''s tool as in claim 7 which contains in addition levelling bubbles located in the second leg member.
Claim 10
Dependent Claim 35 words
An adjustable carpenter''s tool as in claim 8 wherein the two shoulders of its first leg member form a triangularly shaped slot and wherein the blade element of the second leg member is triangularly shaped.
Claim 11
Dependent Claim 24 words
An adjustable carpenter''s tool as in claim 9 which contains in addition a pivotably mounted extension member slidably connected to the first leg member.

References Cited (Backward Citations)

US704369A Cited
US709487A Cited
US734694A Cited
FR371432A Cited
US1083376A Cited
US1141617A Cited
US1108706A Cited
GB461447A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-07 1977-07-09 1978-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-07 1981-07-09 1982-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-07 1985-07-09 1986-01-08 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag