dr jekyll and mr hyde sparknotes chapter 2
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Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... machine-driving shaft. Sclater Chapter 3 5/3/01 10 :22 AM Page 87 66 Fig. 3 In another type of action, the forward and return strokes are accomplished by a suitable mechanism, while the raising and ... The bearings C are supported by the frame as is the driving shaft D. Sclater Chapter 3 5/3/01 10 :20 AM Page 66 85 Sclater Chapter 3 5/3/01 10 :22 AM Page 85 AUTOMATIC SAFETY MECHANISMS FOR OPERATING ... 5 1 ⁄ 2 in. wide. Container height can vary from 2 to 14 inches. The unit handles labels ranging from 7 ⁄ 8 to 5 1 ⁄ 2 in. wide and 7 ⁄ 8 to 6 1 ⁄ 2 in. high. The label hopper is designed for labels...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... every lobe on gear 4, and T 3 /T 4 = L 3 /L 4 = 2/ 3, where T 3 and T 4 are the numbers of teeth on gears 3 and 4. T 1 and T 2 will denote the numbers of teeth on gears 1 and 2. Next, select the ... number of lobes L 3 and L 4 on the gears 3 and 4. In the drawings, L 3 = 2 and L 4 = 3. Any two lobes on the two gears (i.e., any two lobes of which one is on one gear and the other on the ... one gear pair, say 3 and 4, is made partly circular and partly noncircular, then where r 2 = r 3 and r 1 = r 4 for the circular portion, gear 4 dwells. Where r 2 ≠ r 3 and r 1 ≠ r 4 for the noncircular...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... friction drives, and gears. Fig. 1 An axial screw with a rack-actuated gear (A) and an articulated driving rod (B) are both irreversible movements, i.e., the driver must always drive. Fig. 2 A rack-actuated ... turns. Dynamic and static balancing is simplified when an expanding wheel is attached to a nonexpanding main wheel. As a pulley, an expanding wheel can have a steel band fastened to only one section and ... transmission in a pressure gage. Fig. 2 A lever and cam drive for a tire gage. Fig. 3 A lever and sector gear in a differential pressure gage. Fig. 4 A sector gear drive for an aircraft air- speed...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... their seats. Sclater Chapter 6 5/3/01 12: 25 PM Page 191 CHAPTER 6 SPRING, BELLOW, FLEXURE, SCREW, AND BALL DEVICES Sclater Chapter 6 5/3/01 12: 24 PM Page 173 installed and integrated into a ... pressure. The screw in (B) retains and drives a dowel pin for locking purposes. A right- and left-handed shaft (C) actuates a press. Sclater Chapter 6 5/3/01 12: 25 PM Page 1 92 Do you need a buffer between ... instruments. Sclater Chapter 6 5/3/01 12: 24 PM Page 185 TRANSLATION TO ROTATION 1 92 Fig. 11 A hairline adjustment for a tele- scope with two alternative methods for drive and spring return. Fig....
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... feed. Sclater Chapter 7 5/3/01 12: 34 PM Page 23 5 23 2 BUSHED ROLLER CHAINS AND THEIR ADAPTATIONS Various roller, side-plate and pin configurations for power transmissions, conveying, and elevating. STANDARD ... speed. Sclater Chapter 7 5/3/01 12: 33 PM Page 22 3 22 7 GETTING IN STEP WITH HYBRID BELTS Imaginative fusions of belts, cables, gears and chains are expanding the horizons for light-duty synchronous drives Belts ... r 4 for facilitating hand filing. Sclater Chapter 7 5/3/01 12: 33 PM Page 20 4 22 0 Fig. 4(A) Pressures and temperature indica- tors. A pressure change causes the diaphragm and sheave to move vertically and the...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... retainer. Sclater Chapter 8 5/3/01 12: 43 PM Page 26 0 CHAPTER 8 GEARED SYSTEMS AND VARIABLE-SPEED MECHANISMS Sclater Chapter 8 5/3/01 12: 42 PM Page 24 1 25 6 VARIABLE-SPEED FRICTION DRIVES Fig. 2 Two disks ... motion. 25 8 VARIABLE-SPEED DRIVES AND TRANSMISSIONS These ratchet and inertial drives provide variable-speed driving of heavy and light loads. Sclater Chapter 8 5/3/01 12: 43 PM Page 25 8 27 9 SHEET-METAL ... complete nutation of the Sclater Chapter 8 5/3/01 12: 42 PM Page 24 4 24 9 Sphere -and- disk drives (Figs. 12 and 13). The speed variations in the drive shown in Fig. 12 are obtained by chang- ing the...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... constant angle. Sclater Chapter 9 5/3/01 12: 57 PM Page 317 336 LINKAGES FOR BAND CLUTCHES AND BRAKES Fig. 1 An outside band clutch operated by a roller and cone. Fig. 2 An outside band clutch made ... performance, endurance limit stress for fatigue perform- ance 24 (El) nS) e 3 ( 60 2 12 π k M / Sclater Chapter 9 5/3/01 12: 56 PM Page 29 8 322 SMALL MECHANICAL CLUTCHES FOR PRECISE SERVICE Clutches ... Variable-torque drag brake . . . Fig. 2 . . . holds tension constant on tape Fig. 3 Constant-torque screwdriver Sclater Chapter 9 5/3/01 12: 56 PM Page 306 307 SPRING BANDS GRIP TIGHTLY TO DRIVE OVERRUNNING...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... machinery and protect it and its operator. Actuators Linear mechanical switches Sclater Chapter 10 5/3/01 1:08 PM Page 356 CHAPTER 10 TORQUE-LIMITING, TENSIONING, AND GOVERNING DEVICES Sclater Chapter ... devices. The hydraulic operation is exactly the same as that described for the hydraulic drives. Sclater Chapter 10 5/3/01 1:08 PM Page 353 A band brake intended to obtain a friction drag will give ... Chapter 10 5/3/01 1:07 PM Page 351 360 Limit Switches in Machinery (continued ) Sclater Chapter 10 5/3/01 1:08 PM Page 360 3 52 DRIVES FOR CONTROLLING TENSION Mechanical, electrical, and hydraulic...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... ball valve. Its range is 20 to 27 0°F, and its accuracy is ±1°F. The maximum pressure rating is 100 psi for dead-end service and 20 0 psi for continuous flow. Sclater Chapter 11 5/3/01 1:17 PM ... valve. Its temperature range is 20 to 27 0°F, and its accuracy is ±1 to 4°F. It is rated for 5 to 125 psi of steam and 5 to 175 psi of water. Fig. 8 These two recording and controlling instru- ments have ... CHAPTER 11 PNEUMATIC AND HYDRAULIC MACHINE AND MECHANISM CONTROL Sclater Chapter 11 5/3/01 1:15 PM Page 369 375 Fig. 8 The housing...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... ( θ /2) = W /2 (22 ) JS/ [ (cos )] [ (cos )] max / / = −+ + 22 1 21 12 12 θ θ JS/ cos [ (cos )] (cos ) cos (cos ) max / / = − + −+ − + + + 1 21 1 1 1 21 21 12 2 12 θ θ θ θ θ Sclater Chapter ... velocity, and Fig. 6 for angular acceleration. d dt mm mm 2 2 2 2 22 1 12 β ω α α = − +− sin ( ) ( cos ) d dt m mm βα α = − +− ω cos cos 1 12 2 D d a n r = +2 4 180 2 22 cot cos cos cos β α = − +− ma mm 12 2 Fig. ... + ′ ′′ = − 1 1 1 1 2 2 12 221 2 22 R L RL RL x L R L RL RL ]] [ ( / ) sin ] cos sin cos / 1 22 32 2 2 − ′′ =− + ′′ + ′ RL x L R L θ ωθ φ ω θ φ ω θ Slider acceleration Sclater Chapter 13...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 14
... of materials. 2D drawing and detailing software packages are based on ANSI, ISO, DIN, and JIS drafting standards. In a 2D CAD drawing, an object must be described by multi- ple 2D views, generally ... include ã 2D drafting ã 3D wireframe and surface modeling ã 3D solid modeling ã 3D feature-based solid modeling ã 3D hybrid surface and solid modeling Two-Dimensional Drafting Two-dimensional drafting ... of the principles of 3D isometric and perspec- tive drawing in the Middle Ages resulted in a more realistic and accurate portrayal of objects than 2D drawings, and they con- veyed at a glance more...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 15
... Sclater. 2nd ed. 1996. ISBN 0-07-136169-3 1. Mechanical movements. I. Chironis, Nicholas P. II. Mechanisms & mechanical devices sourcebook. III. Title. TJ181.S28 20 01 621 .8—dc21 20 0103 029 7 Copyright ... Technologies Group, Radford, VA ã Ledex Actuation Products, TRW Control Systems, Vandalia OH ã Sandia National Laboratories, Sandia Corporation, Albuquerque, NM ã SolidWorks Corporation, Concord, MA ã ... without the prior written permission of the publisher. 123 4567890 KGP/KGP 07654 321 ISBN 0-07-136169-3 The sponsoring editor for this book was Larry S. Hager and the production supervisor was Pamela A....
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 12
... self-centering and stronger. Non-sliding gears can be pinned to the shaft if it is provided with a hub. Sclater Chapter 12 5/3/01 1 :25 PM Page 420 CHAPTER 12 FASTENING, LATCHING, CLAMPING, AND CHUCKING ... dimen- sioned hubs and clamps so that they can be efficiently fastened to a precision-ground shaft. Sclater Chapter 12 5/3/01 1 :25 PM Page 421 415 Sclater Chapter 12 5/3/01 1 :25 PM Page 415 dle ... fashion. Sclater Chapter 12 5/3/01 1 :25 PM Page 424 422 CLAMPING DEVICES FOR ACCURATELY ALIGNING ADJUSTABLE PARTS Methods for clamping parts that must be readily movable are as numerous and as varied...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 16
... optical 8 22 Inductosyns 8 27 laser interferometers 3 6 8 22 27 magnetic 17 24 potentiometers, precision multiturn 8 22 28 resolvers 8 17 22 24 servosystem 22 tachometers 8 22 25 365 ... encoders, rotary, optical 3 8 22 absolute 8 22 23 brush-type 22 hollow-shaft 22 incremental 8 22 linear, optical 3 6 8 22 23 rotary, magnetic 22 24 Index Terms Links Linear variable ... 1 52 angular-momentum-balanced, robot 48 ball -and- cone 25 0 ball -and- disk, and 25 1 ball -and- screw 5 12 bearings and roller 117 belt 12 224 25 7 belt -and- chain, variable speed 22 4...
Ngày tải lên: 22/10/2012, 14:27
Mechanisms and Mechanical Devices Sourcebook - Chapter 17
... both classical and mod- ern mechanisms and mechanical devices. This edition retains a large core of the con- tents from both the first and second editions, (published in 1991 and 1996, respectively), ... has been supplemented by new and revised articles reflecting present and future trends in mechanical engineering and machine design. The new articles in this edition address topics that are covered ... guides, and X-Y motion systems assembled from stock mechanical components. Other articles in this edition describe commercially available 2D and 3D CAD (com- puter-aided design) software and update...
Ngày tải lên: 22/10/2012, 14:27