US92792A - Improvement in lifting-bars - Google Patents
Improvement in lifting-bars Download PDFInfo
- Publication number
- US92792A US92792A US92792DA US92792A US 92792 A US92792 A US 92792A US 92792D A US92792D A US 92792DA US 92792 A US92792 A US 92792A
- Authority
- US
- United States
- Prior art keywords
- lifting
- rubber
- bars
- improvement
- handles
- 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 - Lifetime
Links
- 241000497192 Phyllocoptruta oleivora Species 0.000 description 4
- 238000010073 coating (rubber) Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/40—Interfaces with the user related to strength training; Details thereof
- A63B21/4001—Arrangements for attaching the exercising apparatus to the user's body, e.g. belts, shoes or gloves specially adapted therefor
- A63B21/4017—Arrangements for attaching the exercising apparatus to the user's body, e.g. belts, shoes or gloves specially adapted therefor to the upper limbs
Definitions
- l My invent-ion consists in a handle, which, being first brought to the desired form, is covered by a thin -skin or coating of rubber, or rubber compound, vulcanized directlyupon the woodenbody or other material of I ⁇ which the handle is made.
- the drawing represents a lifting-bar having handles thus made.
- A shows a longitudinal central section of the bar.
- b b denote the two handles or hand-grasping ends of the bar.
- th'er handles may belthus covered with' rubber. vulcanized directly upon them, though theginyentiopf is more particularly designedfor the handles'cf lifting and other hygienic apparatus.
Description
diluted gister y @met @Mira Letters Patent No. 92,792, dated July 20, 1869.
IMPRofvEMENT m merma-BARS.
' The Schedule referred to in these Letters Patent ,and making p'art of the same.
To all 'whom it may concern Be it known that I, D. P. BUTLER, of' Boston, in the county of Su'olk, and State of Massachusetts, have invented an Improved Handle for Lifting-Apparatus, 85e. and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention, suicient to enable those skilled in the art to practise it.
Y In the use of hygienic lifting-apparatus, it is very diiiioult to obtain handles having surfaces, not only properly shaped for the grasp of the hands, but upon which the hands will not slide; the nearest approach to a perfect handle for this purpose` havug'been a handle surfaced with buckskin, and this soon wears smooth and becomes slippery, is not enduring, cannot be. readily brought to 'the irregular form which it is lequisite for such a handle to have, to enable a firm and: tenacious grasp to be maintained, and the seam made by the lapping edges of the buckskin is always liable to open, and generally presents an objectionable ridge or protrusion.
After much thought and many experiments, extending over a series of years, I have at ,last 'produced a handle which is ti'ce from all of these defects, and which embraces everything that is needed in thel handholding ends of a lifting-bar, so far as relates to grasping-surfaces. y
l My invent-ion consists in a handle, which, being first brought to the desired form, is covered by a thin -skin or coating of rubber, or rubber compound, vulcanized directlyupon the woodenbody or other material of I `which the handle is made. l
The drawing represents a lifting-bar having handles thus made.
A shows a longitudinal central section of the bar.
B, a cross-section of one of the handles.
a denotes the bar, which, if to be used in connection with my lifting apparatusfis formed not unlike the bar shown .in my United States patent, No. 55,618, granted June 19, 1866.
b b denote the two handles or hand-grasping ends of the bar.
Around each of these ends, I wind, or otherwise apply a soft rubber coating, c, and having enveloped the whole end with the rubber, I vulcanize the rubber by heat and pressure, such vulcanization bringing the rubber into one homogeneous piece, without seam or division ofany-kind, and pressure upon it causing thev rubber to adhere throughout, so thatl when iinished, the rubber has permanently imparted to it the contour of the wood beneath, forming a hand-grasp towhich the palm of the hand, and the inner surfaces of the fingers will cling without slipping, and which has a. very Slight degree of elasticity,so that iti-is soit or yielding to the hand. The surface thus formed is also very enduring, andl'uever becomes displaced by grasp.- y
th'er handles may belthus covered with' rubber. vulcanized directly upon them, though theginyentiopf is more particularly designedfor the handles'cf lifting and other hygienic apparatus.
I claim theimprovement in surfacing handles, substantially as and for the purpose specified;
y f D. P. BUTLER,A
Witnesses:
J. B. CROSBY, FRANCIS Gouw.
Publications (1)
Publication Number | Publication Date |
---|---|
US92792A true US92792A (en) | 1869-07-20 |
Family
ID=2162269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US92792D Expired - Lifetime US92792A (en) | Improvement in lifting-bars |
Country Status (1)
Country | Link |
---|---|
US (1) | US92792A (en) |
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0
- US US92792D patent/US92792A/en not_active Expired - Lifetime
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