A new Firearm Piercing Tool Attachment Device for attaching a piercing tool to a firearm having a cleaning port. The inventive device includes a body having a hollow section and a second section, the second section being receivable within the cleaning port of the firearm, a spring-biased pin disposed within the second section for removably attaching the second section to the cleaning port, and a plurality of retaining set screws for removably attaching the piercing tool handle to the hollow section.

Firearm piercing tool attachment device

An impact-force adjusting device for a nailer comprises a housing, a driving member, an adjusting knob and a spring. The driving member is formed with one protrusion, and the housing is defined with one guide groove for insertion of the protrusion, such that the driving member is restricted to linearly move in the housing to and fro by the driving of the adjusting knob, so as to compress the spring to different degrees. Such arrangements not only have the advantages of simple structure and small volume, but also can prevent the adjusting knob from extending out of the housing.

Impact-Force Adjusting Device for a Nailer

The invention relates to a marking machine for metallurgical products, more particularly continuous cast products, comprising at least one marking stamp and a striking device for striking the marking stamp into the product to be marked. The striking device is provided with a striking bolt and a striker spring driving said bolt. The striking bolt strikes the marking stamp that is placed in striking position by actuating the striker spring with an actuation element that is driven by an electric motor, thereby hammering the marking stamp into the product to be marked. Every time the marking stamp is subjected to the action of the spring, the stamp receives an evenly high kinetic energy thereby causing an evenly high striking depth of the marking. The spring in association with the electric motor drive enables fast, precise and easily controllable execution of the individual working steps of the machine. The ensures a high marking repetition rate.

Marking machine for metallurgical products

The invention discloses an impact force controllable pneumatic hammer riveting device A cylinder main body and a cylinder secondary body are arranged on a bottom plate Cylinder front and rear air holes are formed in the cylinder main body A cylinder main rod is sleeved with the interior of the cylinder main body A plurality of inner grooves are formed in the cylinder main rod A gear spiral slotted disc is mounted on the outside of the cylinder main body A gear of a servo motor is engaged with a gear ring of an annular groove of the gear spiral slotted disc The gear spiral slotted disc is provided with a plurality of archimedes spiral grooves A sleeve compressed spring assembly matched with the archimedes spiral grooves is arranged in front of the gear spiral slotted disc and comprises a roller compressed spring, a sleeve, a roller supporting rod and a roller A punch hammer is movably mounted in a horizontal central through hole of the cylinder secondary body According to theimpact force controllable pneumatic hammer riveting device, the air accumulation pressure of an air accumulation cavity can be regulated, the pressure difference between the air pressure on the two sides of the cylinder main rod is changed, the impact force of the punch hammer is controlled, the stability of impact energy is guaranteed, high-precision efficient pneumatic hammer riveting can be achieved, and the impact force controllable pneumatic hammer riveting device has the characteristics of zero oil pollution and convenient carrying

Impact force controllable automatic pneumatic hammer riveting device

The machine makes it possible, after the insertion of coins received in the coin slot of the machine, to initiate, in view of the user, the process of stamping a piece or planchet (blank) selected from a loading store 3 by a positioning element 7 actuated by a cylinder 10. This element places the planchet in the stamping position so that a vertical cylinder 5 which carries the stamp (die) 6 descends until stamping is achieved. After actuation of the cylinder 5, the medal is deflected towards a collection tray.

Machine for engraving/issuing medals with stamped allegorical motifs

An impact device for use in machines, such as presses, for marking, punching, stamping, forming, riveting, and other related operations, wherein a convex edged member, such as a ball, axially separates a tool and a hammer, the hammer being loaded by compressible means such as a tension spring, all moveable axially within a moveable spindle. The ball is displaced radially into an adjoining magazine at the point of full extension of the spindle, after the tool is in contact with the workpiece, thereby allowing the spring loaded hammer to strike the tool, imparting an impact force to the workpiece.

Gilbert Laffay

Papers

Impact device for marking, punching, stamping, forming, riveting and other related operations