US938704A - Jack-rafter bevel. - Google Patents

Jack-rafter bevel. Download PDF

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Publication number
US938704A
US938704A US46866808A US1908468668A US938704A US 938704 A US938704 A US 938704A US 46866808 A US46866808 A US 46866808A US 1908468668 A US1908468668 A US 1908468668A US 938704 A US938704 A US 938704A
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Prior art keywords
jack
rafter
bevel
bars
arms
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US46866808A
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Casper F Reum
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers

Definitions

  • the object of this invention is to construct bevel for marking the cuts to be made on ack rafters to fit the valley or hip rafter, ml is made double ended so as to mark the ack rafters for both sides of the Valley or ip rafters.
  • Figure is an inner-face view of the bevel showing he outstretch of the arms for marking the dge of a jack rafter.
  • Fig. 2 is a perpeetive view of the angle support for the rms.
  • Fig. 3 is a perspective View of the evel complete in its connection with a jack after.
  • Fig. 4 is an innerface view of the evel showing the outstretch of the arms for mrking the side of a jack rafter.
  • Fig. 5 a an isometrical representation of a jack after showing the cuts at its ends.
  • My improved bevel comprises the angle upport composed of the two sections 1 and arranged at right angles to one another, nd have their ends 3 and a respectively cut t an angle of forty-five degrees, and the nds are formed with perforations 5 and 6 espectively.
  • the arms 7 and 10 are each free of one another so that each can be adjusted independently of the other and clamped in position.
  • a jack rafter is first laid out and the pair of arms at one end of the angle support are adjusted to the markings and clamped in position.
  • the pair of arms at the other end of the angle support are adjusted to mark ings previously made for the end of a jack rafter to fit the other side of the valley or hip rafter after which the arms are clamped in position, when the parts will appear as shown in Fig. 8.
  • the angle support being made of sheet material will hold the bars pivoted at its ends a given distance apart and when the bars are clamped to the structure will be rigid and always ready for use. As the bars are separately pivoted to the angle support they may be adjusted to any angle within their range, and when not in use may be folded together so that the bevel as a whole will occupy little space.
  • a jack rafter bevel comprising a support having sections at right angles to one another and having their ends beveled, and an arm pivoted to each end of each section and located on the inner faces of the sections.

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  • Physics & Mathematics (AREA)
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Description

G. F. REUM.
JACK RAFTEB. BEVEL.
APPLICATION FILED DEC. 21, 1908.
938,704, Patented Nov. 2, 1909.
CASPER IE. REUM, OF ROCKFORD, ILLINOIS.
J'ACK-RAFTER BEVEL.
Specification of Letters Patent.
Patented Nov. 2, 1909.
Application filed December 21, 1908. Serial No. 468,668.
all whom it may concern:
Be it known that I, CASPER F. REUM, a itizen of the United States, residing at iockford, in the county of Vinnebago and tate of Illinois, have invented certain new ind useful Improvements in Jack-Rafter levels, of which the following is a specificaion.
The object of this invention is to construct bevel for marking the cuts to be made on ack rafters to fit the valley or hip rafter, ml is made double ended so as to mark the ack rafters for both sides of the Valley or ip rafters.
In the accompanying drawings. Figure is an inner-face view of the bevel showing he outstretch of the arms for marking the dge of a jack rafter. Fig. 2 is a perpeetive view of the angle support for the rms. Fig. 3 is a perspective View of the evel complete in its connection with a jack after. Fig. 4 is an innerface view of the evel showing the outstretch of the arms for mrking the side of a jack rafter. Fig. 5 a an isometrical representation of a jack after showing the cuts at its ends.
My improved bevel comprises the angle upport composed of the two sections 1 and arranged at right angles to one another, nd have their ends 3 and a respectively cut t an angle of forty-five degrees, and the nds are formed with perforations 5 and 6 espectively.
To the innerfacc of the section 1 at the nds thereof are adjustably secured bars 7 y the bolts 8 passing through the perforaions 5 and through perforations in the bars, nd receiving thumb nuts 9 on their procting ends.
To the inner face of the section 2 at the ends thereof are adjustably secured bars 10 by the bolts 11 passing through the perforations 6 and through perforations in the bars and receiving thumb nuts 12 on their projecting ends.
The arms 7 and 10 are each free of one another so that each can be adjusted independently of the other and clamped in position.
A jack rafter is first laid out and the pair of arms at one end of the angle support are adjusted to the markings and clamped in position. The pair of arms at the other end of the angle support are adjusted to mark ings previously made for the end of a jack rafter to fit the other side of the valley or hip rafter after which the arms are clamped in position, when the parts will appear as shown in Fig. 8. The angle support being made of sheet material will hold the bars pivoted at its ends a given distance apart and when the bars are clamped to the structure will be rigid and always ready for use. As the bars are separately pivoted to the angle support they may be adjusted to any angle within their range, and when not in use may be folded together so that the bevel as a whole will occupy little space.
I claim as my invention.
A jack rafter bevel comprising a support having sections at right angles to one another and having their ends beveled, and an arm pivoted to each end of each section and located on the inner faces of the sections.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
CASPER F. REUM.
Witnesses:
A. O. BEHEL, E D. E. N. BEHEL.
US46866808A 1908-12-21 1908-12-21 Jack-rafter bevel. Expired - Lifetime US938704A (en)

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US46866808A US938704A (en) 1908-12-21 1908-12-21 Jack-rafter bevel.

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US46866808A US938704A (en) 1908-12-21 1908-12-21 Jack-rafter bevel.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8209874B1 (en) * 2008-03-13 2012-07-03 Tri-Walker, LLC Building frame construction tools and methods using laser alignment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8209874B1 (en) * 2008-03-13 2012-07-03 Tri-Walker, LLC Building frame construction tools and methods using laser alignment

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