US12412A - Method of driving paibs of reciprocating saws - Google Patents

Method of driving paibs of reciprocating saws Download PDF

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Publication number
US12412A
US12412A US12412DA US12412A US 12412 A US12412 A US 12412A US 12412D A US12412D A US 12412DA US 12412 A US12412 A US 12412A
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driving
lever
paibs
sashes
cam
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/547—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
    • B26D1/553—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member with a plurality of wire-like cutting members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/687—By tool reciprocable along elongated edge
    • Y10T83/6895—Plural reciprocable tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8828—Plural tools with same drive means

Definitions

  • This invention relates to a new and improved mode of driving reciprocating saws and other portions of machinery in which two parts have an opposite reciprocating motion working simultaneously in opposite directions.
  • the nature of the invention consists in giving a vibratory motion to a lever by means of 'an inclined wheel or cam as will be hereafter fully explained, the saws' or other parts to be operated being connected to the ends of the lever above mentioned.
  • FIGs. 1 and 2 represents a frame to the upper part of which are attached four vertical guides (a) (a) (a) (a) between which two saw sashes B, B, are placed, see Fig. 1.
  • C represents a driving shaft at the lower I part of the frame A having upon it an inclined wheel or cam D. This cam or wheel is made perfectly true or round and of equal width or breadth throughout, and is placed in an inclined or oblique position on the shaft C, as clearly shown in Fig. l.
  • a lever E Directly over the cam or wheel D there is placed a lever E, through the center of which a shaft F passes, said shaft having its bearing in the front and back of the frame A as shown in Fig. 2.
  • the lever E is permanently attached to the shaft F and works or moves with it.
  • Gr, Gr are connecting rods lor pitmen which are secured by pivots (d) to the lower ends of the saw sashes B, and the ends of the vlever E.
  • the edges of the wheel or cam D will, owing to' its' inclination or Obliquity, act kalternately against the friction rollers (o) (c) on the inner sides of the pendants ork projections (o), (b), and give a vibratory motion to the lever E, and as the saw sashes B are connected to the ends of the lever E by the rods orpitmen Gr, the sashes will worlr simultaneously with an opposite reciprocating motion, orv one ascends while the other descends and the sashes are balanced, the descending sash by its gravity assisting the ascending sash.
  • the inclination or Obliquity of the wheel or cam D should be such as to give the desired length of stroke to the sashes B.
  • the above improvement may kbe applied to any parts of machinery having the saine motion as the saw sashes, as herein shown. It possesses many advantages over the usual crank motion, there is less friction, the power is applied vertically or nearly so to the sashes, and one sash balances the other causing the motion to be regular or even.

Description

G. P. KETGHAM, OF BEDFORD, INDIANA.
METHOD OF DRIVING PAIRS OF RECIPROCATING SAWS.
Specification of Letters Patent No. 12,412, dated February 20, v1855.
`T all whom t may concern Be it known that I, G. P. KETCHAM, of
` Bedford, in the county of Lawrence and St-ate of Indiana, have invented a new and Improved Mode of Driving Reciprocating Saws or other Parts of Machinery Having a yReciprocating Motion; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1, is a front view of two reciproeating saws operated by my improved mode the frame and inclined Wheel or cam being bisected through 'their centers. Fig. 2, is a transverse vertical section of ditto.
Similar letters of reference indicate corresponding parts in the two figures.
This invention relates to a new and improved mode of driving reciprocating saws and other portions of machinery in which two parts have an opposite reciprocating motion working simultaneously in opposite directions.
The nature of the invention consists in giving a vibratory motion to a lever by means of 'an inclined wheel or cam as will be hereafter fully explained, the saws' or other parts to be operated being connected to the ends of the lever above mentioned.
To enable others skilled inv the art 'to make and use my invention, I will proceed to describe its construction and operation.
A Figs. 1 and 2 represents a frame to the upper part of which are attached four vertical guides (a) (a) (a) (a) between which two saw sashes B, B, are placed, see Fig. 1. C represents a driving shaft at the lower I part of the frame A having upon it an inclined wheel or cam D. This cam or wheel is made perfectly true or round and of equal width or breadth throughout, and is placed in an inclined or oblique position on the shaft C, as clearly shown in Fig. l.
Directly over the cam or wheel D there is placed a lever E, through the center of which a shaft F passes, said shaft having its bearing in the front and back of the frame A as shown in Fig. 2. The lever E is permanently attached to the shaft F and works or moves with it.
To the under side of the lever there are attached two pendants or projections (o) (o) at equal distances each side of the center of the lever E or the shaft F, see Fig. 1, andthe edge of the wheel or cam D works between the pendants or projections, (o)v (o) which have friction rollers (c) (c) on their inner sides, one to each, see Fig. l.
Gr, Gr, are connecting rods lor pitmen which are secured by pivots (d) to the lower ends of the saw sashes B, and the ends of the vlever E.
As the driving shaft C is turned the edges of the wheel or cam D, will, owing to' its' inclination or Obliquity, act kalternately against the friction rollers (o) (c) on the inner sides of the pendants ork projections (o), (b), and give a vibratory motion to the lever E, and as the saw sashes B are connected to the ends of the lever E by the rods orpitmen Gr, the sashes will worlr simultaneously with an opposite reciprocating motion, orv one ascends while the other descends and the sashes are balanced, the descending sash by its gravity assisting the ascending sash. The inclination or Obliquity of the wheel or cam D should be such as to give the desired length of stroke to the sashes B.
The above improvement may kbe applied to any parts of machinery having the saine motion as the saw sashes, as herein shown. It possesses many advantages over the usual crank motion, there is less friction, the power is applied vertically or nearly so to the sashes, and one sash balances the other causing the motion to be regular or even.
Having thus described my invention what I claim as new and desire to secure by Letters Patent, is,
Operating the saw sashes B, B, by means of the inclined wheel or cam D and lever E with its pendants or projections (b), (b) the parts to be operated being connected to the ends of` the lever E by rods\or pit-men G. The above parts being constructed and arranged substantially as herein shown.
GEO. P. KETCHAM.
Witnesses:
ISAAC DENsoN, P. T. VIs'rAL.
US12412D Method of driving paibs of reciprocating saws Expired - Lifetime US12412A (en)

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