Abstract: Back-pedal brake operator for multi-speed bicycles in which the brake operating action is obtained by turning the foot pedals rearwardly a short distance from any position which the pedals may occupy at the instant when the driver wishes to apply braking action, the braking operation being obtained without utilizing the sprocket chain to apply the braking force, and the brakes are automatically released without any "lock-up" effect when the driver starts pedaling forward in the normal manner. The back-pedal operators shown are directly associated with the sprocket assembly as a compact self-contained unit integrated therewith and can be installed as original equipment by bicycle manufacturers or can be retrofitted by bicycle shops or owners on existing multi-speed bicycles. The bicycle is permitted to be wheeled freely rearwardly without the brakes becoming applied.

Abstract: A sheet jogger to justify and align a stack of sheets into a registered bundle which is subsequently discharged into a bin. Prior to discharging of the bundle, the stack of sheets can be stapled. Each bundle is offset from every other bundle when discharged into the bin. Sheets are fed onto a jogging deck by at least one conveyor roller to abut against at least one gate finger at the end of the jogging deck. A back jogger aligns the sheets into registration against the gate finger and a left side jogger assembly jogs the sheets into alignment against a right side jogger assembly. The gate fingers drop down and a lower eject roller rises above the jogging deck to engage a bottom sheet of the stack thereby engaging the stack against an upper fixed pressure roller.

Abstract: In a rotary drum collator, apparatus is described for removing sheet material from pockets in a collating drum. As the drum rotates, adjacent rotating sheet withdrawing arms sweep into pockets of the drum to frictionally remove the sheets. The rotating arms and the drum require careful phase adjustments. Continuous depletion of the sheet material requires a continuous adjustment of the angle or phase at which the rotating arms engage the sheet material.

Abstract: A method of providing an improved mechanical bond when fastening a plurality of paper sheets together. The body of sheet material is punched or cut through to form a flap. The flap is then folded over upon the body of sheets, and the flap and body of sheets are simultaneously crimped. A superior mechanical bond is formed, because three separate bonds are made; the body of sheets are fastened together, the layers of the flap are fastened together, and the body of sheets is fastened to the flap.