GB390689A - Improvements in internal combustion percussive tools - Google Patents

Improvements in internal combustion percussive tools

Info

Publication number
GB390689A
GB390689A GB19314/32A GB1931432A GB390689A GB 390689 A GB390689 A GB 390689A GB 19314/32 A GB19314/32 A GB 19314/32A GB 1931432 A GB1931432 A GB 1931432A GB 390689 A GB390689 A GB 390689A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
stroke
july
charge
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
Application number
GB19314/32A
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB390689A publication Critical patent/GB390689A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/10—Means for driving the impulse member comprising a built-in internal-combustion engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

390,689. Percussive drills. PFLœGER, A., 12, Panoramastrasse, and HAAGE, K., 8, Turmstrasse, both in Esslingen-on-Neckar, Germany. July 8, 1932, No. 19314. Convention date, July 22, 1931. [Class 124.] An internal-combustion percussive tool working on the four-stroke-cycle has a piston 2, carried by a spring 4. In the working stroke the piston uncovers a port 8, enabling the gases to press down the valve 6 and thus opening the cylinder head to the exhaust conduit 9. The compressed spring now performs the exhaust stroke, and passing its equilibrium position, returns the piston downward, sucking in the charge through the valve 11, and handle 12. The next upward movement of the piston compresses the charge, closes the valve 11 and completes the ignition circuit. The handle 14 breaks the ignition circuit until pressure is applied to it to hold the tool to the work.
GB19314/32A 1931-07-22 1932-07-08 Improvements in internal combustion percussive tools Expired GB390689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE390689X 1931-07-22

Publications (1)

Publication Number Publication Date
GB390689A true GB390689A (en) 1933-04-13

Family

ID=6375493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19314/32A Expired GB390689A (en) 1931-07-22 1932-07-08 Improvements in internal combustion percussive tools

Country Status (1)

Country Link
GB (1) GB390689A (en)

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