216 MANUAL OF PACK TRANSPORTATION. 



sunk on under side of side plate. These holes to receive staples for 

 side plates. 



8. Staples for side plates (4). — To be made of Norway flat iron 6 

 inches long, one-half inch wide, and three-sixteenths of an inch thick, 

 shaped in this manner: One and five-eighths inches from each end 

 turn at right angles; this will leave the outward or front side of 

 staple 2^ inches from out to out. Now three-fourths of an inch from 

 each end turn inwardly at right angles, parallel with outward or front 

 side of staple. Now provide two holes on basis of staple corre- 

 sponding with those on end of side plate. Two 1-inch rings will be 

 provided for each staple and rivet down securely. Its use is to 

 receive litter straps attached to "swivel clamp" of side plate. 



9. Coupling plates for side plates {2). — To be similar as those 

 described for coupling plates for hinges. In attaching coupling 

 plates to side plates, they will fit flush with ends and outward edge of 

 side plates ; corresponding holes will be provided on the bottom por- 

 tion of side plate and countersunk on its upper side. When riveted 

 down, rivets will be flush with upper and under surface of plates. 

 The loop so formed on end of side plate by "templet" is to receive 

 wooden stifi^ener. 



10. ^^ooden stiff eners for coupling plates of side plates {2). — To be of 

 sound liickory, free from knots or other blemishes, 22 inches long, 

 3 inches wide, and 1} inches thick, shaped in this manner: Five and 

 seven-eighths inches from each end saw down on one side three- 

 fourths of an inch deep, and "gain" out portion between cuts. This 

 leaves one-half of an inch tliickness on bottom or under side of 

 stiff ener; now 2 J inches from each end on same side saw down one- 

 half of an inch and "gain" out between cuts. Tliis leaves an offset 

 3 1 inches long and three-fourths of an inch thick. Next each out- 

 w^ard portion of 2h inches will be beveled or tapered on same side to a 

 tliickness of five-eighths of an inch on one end, antl will be considered 

 the downward side of stiffener. This portion will fit exactly in form 

 shaped by "templet" on the end of side plates and stiffener will ride 

 flush with the upper and lower edges of couphng plate. Stiffener 

 will be provided with bolts and screws in similar manner as that 

 described for stiffener on coupling plate of hinges. 



11. Swivel clamps for side plates (4). — To be made of soft steel, 7 

 inches long, 2\ inches wide, and one-eighth of an inch thick (gauge 

 11), shaped in this manner: Bevel one end and form circle or turn 

 as close as can be had, so as to form a rounded surface on end. Now 

 measure 1| inches from this end and turn at right angles, the end of 

 circle outward; now 1^ inches from inside of angle, turn again at 

 right angles parallel with first portion, the base formed between 

 parallel sides to be level and fully H inches in the clear, the angles 

 or corners of free end to be rounded. In shaping base the angles or 

 corners should be shghtly rounded ; the aid of a templet should be em- 

 ployed for this purpose. This to receive the pole or side bar of 

 "fitter." Now provide two holes whose diameter shall be one-half 

 of an inch; the first on free end of clamp, whose center shall be e([ually 

 distant from each edge and 1 inch from free end of clamp; the 

 second on outward side or portion first formed, likewise equally dis- 

 tant from each edge and 1 inch from rounded end. 



The first hole on free end to receive swivel bolt for clamp, the 

 second hole on outward side of first portion to receive box-rocl nut 

 with set screw and to be considered the front of swivel clamp. 



