US1521367A - Gauge for machines for folding sheet metal - Google Patents

Gauge for machines for folding sheet metal Download PDF

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Publication number
US1521367A
US1521367A US674420A US67442023A US1521367A US 1521367 A US1521367 A US 1521367A US 674420 A US674420 A US 674420A US 67442023 A US67442023 A US 67442023A US 1521367 A US1521367 A US 1521367A
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United States
Prior art keywords
gauge
machines
teeth
folding sheet
sheet metal
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Expired - Lifetime
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US674420A
Inventor
Paul R Hahnemann
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.)
Veeder Industries Inc
Original Assignee
Peck Stow and Wilcox Co
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Publication date
Application filed by Peck Stow and Wilcox Co filed Critical Peck Stow and Wilcox Co
Priority to US674420A priority Critical patent/US1521367A/en
Application granted granted Critical
Publication of US1521367A publication Critical patent/US1521367A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder

Definitions

  • Figure 1 a perspective view of my improved gauge.
  • F 3 a view thereof in transverse section on the line 33 of Fig. 1.
  • My invention relates to an improvement in gauges. designed for machines for folding sheet-metal, of he type shown and described in United States Patent No. 314,311, grantrd irlarch 2%, 1885, to The Peck, Stow &- .Yilcox (lompany, on the application of Williani J] Bayrer, the objectbeing to provide an eliicicnt gauge of the character described, mnstructcd with particular reference to resisting wear in use and to rigidity, whereby it markedly increases the accuracy of the product turned out by the machine.
  • my invention consists in a gauge consisting of a castmetal body and a series of independently 'loriucd hardened teeth having their inner cuds cmhwlded in the said body when the same is 738i, and perforated for the liowage of the metal thereof through them, whereby they are anchored in place, and the continuity of the cast-metal maintained throughthe whole series of teeth.
  • I employ a series of steel gauge-teeth 5 having their inner ends formed with transverse perforations e. A suitable number of such teeth. equally spaced apart. are install- Serial No. 674,420.
  • the fluid metal flows through the perforations 6 of the teeth 5, and not only firmly anchors them in place, but maintains the continuity of the metal from one end of the front bar 8 of the gauge- 5 body 7 to the other.
  • the forwardly-projecting ends of the teeth are hardened in any suitable manner and then ground to a gauge, where by they are made so hard as to effectually resist the cutting action of the sharp edges of sheet-metal shoved against them and so gauged preparator 7 to being folded in the machine.
  • a machine provided 6 with my improved gauge with hardened teeth cast into its body, may be depended upon for a degree of accuracy through-out the life of the machine far above a machine in which the gauge-teeth are cast integral with the body and of the same material, necessitating the frequent truing up of the teeth, and the ultimate replacement of the gauges, whereas, under my invention, the gauge requires no such attention.
  • a unitary, remoyable gauge for sheet-metal folding machines comprising a body and a series of independently-formed teeth provided at their inner ends with perforations and having their said ends permanently and rigi l ly united with the said body by integral portions thereof extending through the said perforations.

Description

3m mm 1,521,367 v P. R. HAHNEMANN- GAUGE FOR MACHINES FOR FOLDING SHEET METAL Filed Nov. 12, 1925 tlhll'l STATES unset .PTENT QFFIE.
PAUL R. HAHNEMANN, OF SOUTHINGTON, CONNECTICUT, ASSIGNOR TO THE PECK STOW & 'WILCOX CO'., 012 SOUTHINGTON, CONNECTICUT, A CORPORATION.
GAUGE FOR MACHINES FOR FOLDING SHEET METAL.
Application filed November 12, 1923.
To (1 107mm, it may concern:
Be it known that I, PAUL R. HAHNEMANN, a citizen of the United States, residing at Southiugton, in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Gauges for Machines for Folding Sheet l/letal; and I do hereby declare the following, when taken in connection wit.) the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-
Figure 1 a perspective view of my improved gauge.
ltigv 2 a view thereof in longitudinal section on the line 22 of Fig.1.
F 3 a view thereof in transverse section on the line 33 of Fig. 1.
F 4 a detached, perspective view of one of the perforated steel gauge-teeth.
My invention relates to an improvement in gauges. designed for machines for folding sheet-metal, of he type shown and described in United States Patent No. 314,311, grantrd irlarch 2%, 1885, to The Peck, Stow &- .Yilcox (lompany, on the application of Williani J] Bayrer, the objectbeing to provide an eliicicnt gauge of the character described, mnstructcd with particular reference to resisting wear in use and to rigidity, whereby it markedly increases the accuracy of the product turned out by the machine.
l-Yith these ends in view, my invention consists in a gauge consisting of a castmetal body and a series of independently 'loriucd hardened teeth having their inner cuds cmhwlded in the said body when the same is 738i, and perforated for the liowage of the metal thereof through them, whereby they are anchored in place, and the continuity of the cast-metal maintained throughthe whole series of teeth.
lu carrying out my invention, as herein shown, I employ a series of steel gauge-teeth 5 having their inner ends formed with transverse perforations e. A suitable number of such teeth. equally spaced apart. are install- Serial No. 674,420.
ed in the mold in which the gauge-body 7 is cast, at which time the fluid metal flows through the perforations 6 of the teeth 5, and not only firmly anchors them in place, but maintains the continuity of the metal from one end of the front bar 8 of the gauge- 5 body 7 to the other. After the inner ends of the teeth 5 have thus been cast into the gauge-body 7, the forwardly-projecting ends of the teeth are hardened in any suitable manner and then ground to a gauge, where by they are made so hard as to effectually resist the cutting action of the sharp edges of sheet-metal shoved against them and so gauged preparator 7 to being folded in the machine. Therefore, a machine provided 6 with my improved gauge, with hardened teeth cast into its body, may be depended upon for a degree of accuracy through-out the life of the machine far above a machine in which the gauge-teeth are cast integral with the body and of the same material, necessitating the frequent truing up of the teeth, and the ultimate replacement of the gauges, whereas, under my invention, the gauge requires no such attention.
I am aware that anchoring of inserts in cast-metal bodies by flowing the molten metal through. openings in them is old and do not claim that idea broadly, but only as applied to the new article of manufacture herein claimed.
I claim:
As a new article of manufacture, a unitary, remoyable gauge for sheet-metal folding machines, comprising a body and a series of independently-formed teeth provided at their inner ends with perforations and having their said ends permanently and rigi l ly united with the said body by integral portions thereof extending through the said perforations.
In testimony whereof. l, have signed this specification in the presence of two subscribing witnesses.
PAUL R. HAHNdh IANN.
lVitnesses Bonner R. PRATT, CHARLES T. hilosi-imn.
US674420A 1923-11-12 1923-11-12 Gauge for machines for folding sheet metal Expired - Lifetime US1521367A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511530A (en) * 1946-11-08 1950-06-13 Alphonse A Espari Metal-folding machine with interconnected folding and workclamping means
US20120151988A1 (en) * 2010-12-16 2012-06-21 Hexagon Metrology, Inc. Machine calibration artifact

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511530A (en) * 1946-11-08 1950-06-13 Alphonse A Espari Metal-folding machine with interconnected folding and workclamping means
US20120151988A1 (en) * 2010-12-16 2012-06-21 Hexagon Metrology, Inc. Machine calibration artifact
US8826719B2 (en) * 2010-12-16 2014-09-09 Hexagon Metrology, Inc. Machine calibration artifact

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