Abstract: Mobile saw bench having at the front means for attachment to the three point linkage of an agricultural tractor and at the rear means for attachment to a trailer, whereby a tractor, the saw bench and a tractor can form a train of machines which can move intact, with the saw bench lifted off the ground while still between the tractor and trailer.

Abstract: Method and apparatus for suppressing noise in machinery a having movable element and fixed element in close proximity to the movable element is disclosed. The movable element and fixed element may coact to disturb the atmosphere and produce noise. A fluid system is provided for inducing a pressure variation proximate to the movable element and fixed element to thereby reduce the level of noise.

Abstract: An ultrasonic cutting apparatus comprising a tuning fork or U-shaped flexural member having legs on which cutting means are mounted, and an ultrasonic drive connected to the flexural member for inducing ultrasonic vibrations in the flexural member. Also disclosed herein is an ultrasonic drive member having a "folded over" resonant holder, and a piezoelectric crystal compressively mounted in the holder by coupling means for transmitting the ultrasonic excitation from the drive to the flexural member.

Abstract: Apparatus for cutting sheet material unwound from a roll supported adjacent a cutter, the cutter comprising a stationary cutting member and a distinct movable cutting member adapted to cut material placed between the cutting members. The stationary cutting member is mounted on a support which can be affixed to a wall or supported on legs on the floor, and the movable cutting member is guidably supported for longitudinal travel along the stationary cutting member on which it rides to effect cutting of the material.

Abstract: A punching apparatus includes a press frame having upper and lower portions forming a recess to receive a workpiece that is supported by a worktable mounted on the frame lower portion. A tool support arm having a tool holder releasably connected thereto is pivotally connected to the frame upper portion for movement into and out of vertical alignment with a ram punch and die. A fluid actuated piston cylinder assembly is connected to the press frame in the recess with an extensible rod of the assembly connected to the rear end portion of the tool support arm. Actuation of the assembly by an actuator valve laterally swings the tool support arm between a tool punching position and a tool changing position displaced from alignment with the ram punch and die. A fluid actuated extensible device in the frame upper portion secures the tool support arm to the press frame in the tool punching position.

Abstract: A portable cutting device is provided which comprises a table having first and second frame sections maintained in parallel spaced apart relationship by a plurality of attaching members extending between said first frame section and said second frame section, each of said first and said second frame sections having a longitudinally extending assembly mounted along an upper edge thereof, said longitudinal assemblies having a plurality of spaced apart transverse assemblies mounted thereon and extending substantially perpendicularly therebetween; guide means having a length sufficient to traverse a diagonal of said table and having sufficient rigidity to resist bending under stress and cutting means coacting with said guide to permit said cutting means to transverse a substantial portion of the length of said guide.

Abstract: Herein is disclosed a portable and collapsible mounting for numerous types of power saw units, which comprises a table-like device having an open frame top with adjustable hanger brackets for rigidly securing the base of a power saw unit thereto. Said frame top is supported by forward and rearward pairs of legs rigidly braced in use, but pivotally connected at their upper ends with the frame for swinging inwardly against the said top frame to compact the assembly of saw unit and mounting. In the compact or collapsed position the assembly may be readily rolled from place-to-place or pushed upon a transportation vehicle through the medium of special enlarged wheels which are mounted on bolsters depending from the rear portion of the table top construction. At each end of the table top frame of the mounting a pair of roller-supporting rails are slidably and adjustably mounted in the longitudinal sides of the top frame.