Vibrating scraper
OwnerMilton C. Horstinventor
Life of this patent
Estimating the term…
Abstract
A razor blade holder includes a base plate and a top jaw. A cylindrical sleeve is attached to the base plate by two loops on the back of the base plate going under the cylindrical sleeve and one loop on the back of the plate over the cylindrical sleeve. A holding screw extends through a hole in the top jaw into a tapped hole in the base plate. The top jaw is curved from the front to the back so that tightening the holding screw will tightly hold the razor blade located between the base plate and the top jaw. A set screw radially in the sleeve secures the sleeve to the engraving point of a vibrating engraver. Therefore, operation of the engraver will vibrate the blade to aid in the scraping action.
Claims4
A holder for holding a razor blade adapted to be attached to a vibrating engraver comprising:
- a. a cylindrical sleeve,
- b. an bore in the sleeve,
- c. a set screw radially in the sleeve,
- d. a base plate having a front, back and two sides,
- e. two loops on the back of the base plate circumferentially under the cylindrical sleeve,
- f. one loop on the back of the base plate circumferentially over the cylindrical sleeve,
- g. at least one of said loops fixed as by welding to the sleeve so that the base plate is permanently attached to the sleeve,
- h. a lug on each side of the base plate extending upward therefrom, said lugs adapted to engage notches in a razor blade to be held in the front of the base plate,
- i. a tapped hole through the base plate at about the center thereof,
- j. a top jaw having a front, back, and two sides,
- k. a hole through the top jaw at about the center thereof,
- l. a holding screw through the hole in the top jaw and threaded into the tapped hole of the base plate to secure the top jaw to the base plate with the front of the top jaw over the front of the base plate,
- m. a notch at the front corner of each side of the top jaw so that the top jaw mates with the base plate at this area,
- n. a slot in the back of the top jaw forming
- o. two prongs which straddle the sleeve, and
- p. the jaws being curved with the center at the holding screw arched away from the base plate, so that
- q. tightening the holding screw will press the prongs against the base plate and the front of the jaw against the front of the base plate.
A paint scraper comprising:
- a. a vibrating engraver,
- b. a rod-like engraving point mounted in said engraver,
- c. said engraving point adapted to vibrate axially,
- d. a cylindrical sleeve,
- e. an bore in the sleeve telescoped over the engraving point,
- f. a set screw radially in the sleeve securing the sleeve on the engraving point,
- g. a base plate having a front, back, and two sides,
- h. two loops on the back of the base plate circumferentially under the sleeve,
- i. one loop on the back of the base plate circumferentially over the sleeve,
- j. at least one of said loops fixed as by welding to the sleeve so that the base plate is permanently attached to the sleeve,
- k. a lug on each side of the base plate extending upward therefrom,
- l. a razor blade having a notch in each side thereof,
- m. said lugs engaging the notches in the razor blade,
- n. a tapped hole through the base plate at about the center thereof,
- o. a top jaw having a front, back and two sides,
- p. a hole through the top jaw at about the center thereof,
- q. a holding screw through the hole in the top jaw, and threaded into the tapped hole of the base plate to secure the top jaw to the base plate with the front of the jaw over the front of the base plate,
- r. a notch at the front corner of each side of the top jaw so that the top jaw mates with the base plate at this area,
- s. a slot in the back of the top jaw forming two prongs which straddle the sleeve, and
- t. the jaw being curved with the center at the holding screw arched away from the base plate,
- u. the front of the jaw pressing the razor blade against the front of the base plate, and
- v. the two prongs pressed against the base plate when the holding screw is tightened.
Dependencies are inferred from the claim text.